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is a significant concern for physicians. Central" p5 N8 t9 J/ ~0 D
precocious puberty (CPP), which is mediated3 ^8 @ Z% z4 N: J6 P V/ O7 ~
through the hypothalamic pituitary gonadal axis, has
$ U( C5 W: p: ia higher incidence of organic central nervous system
" ]/ I. M3 f$ x# A$ }+ i/ M- g Ylesions in boys.1,2 Virilization in boys, as manifested
* D/ V9 a* t1 X5 qby enlargement of the penis, development of pubic8 ~: x. T6 w5 G. _. L7 T
hair, and facial acne without enlargement of testi-
/ f" I4 d2 _9 Q5 N% wcles, suggests peripheral or pseudopuberty.1-3 We. O" _! L4 O/ K% p+ Q
report a 16-month-old boy who presented with the0 L4 d3 }2 r0 e5 u
enlargement of the phallus and pubic hair develop-
7 r' k9 ?6 M6 ~* Gment without testicular enlargement, which was due) }4 o1 J+ R' P5 T1 h; C) L; S
to the unintentional exposure to androgen gel used by: J' Q; j% F1 d3 A! F! w( S
the father. The family initially concealed this infor-
- y9 e' x) ~" Q% dmation, resulting in an extensive work-up for this
5 Z$ d$ c" U' uchild. Given the widespread and easy availability of
- n2 J1 U! K8 E8 Jtestosterone gel and cream, we believe this is proba-
: j! n L; _. l R5 F2 S9 Lbly more common than the rare case report in the
' t$ C" X/ z: U. h4 Dliterature.4
' [# R& Y- k6 O4 O. hPatient Report" F! g) n X$ C6 V1 U
A 16-month-old white child was referred to the
6 }/ P! t M2 `' u& x" N3 _5 W8 eendocrine clinic by his pediatrician with the concern, f" |# T& l, K N: A" t
of early sexual development. His mother noticed
, a/ s# M `+ E5 b. F% |light colored pubic hair development when he was0 |0 `6 o7 F7 i& z6 C1 | V
From the 1Division of Pediatric Endocrinology, 2University of
( t- p, h$ O4 H/ E6 G& E" }5 HSouth Alabama Medical Center, Mobile, Alabama.
8 `: L) K, g) ]& q# H1 g- G) KAddress correspondence to: Samar K. Bhowmick, MD, FACE,
" K3 n3 {7 [# n3 @3 d3 bProfessor of Pediatrics, University of South Alabama, College of
6 R6 G, v- u v: lMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
5 Q+ l7 ~8 o1 z$ L5 `7 J) be-mail: [email protected].
$ w# w+ s* a6 W5 Nabout 6 to 7 months old, which progressively became& H: c: g3 s# x4 M9 K/ K: W; n
darker. She was also concerned about the enlarge-% X3 N& E: {7 Z0 Z7 u& B9 g
ment of his penis and frequent erections. The child
& A2 G" g5 y4 Q$ S' ~5 _was the product of a full-term normal delivery, with8 ~; J" h V, H6 a6 s
a birth weight of 7 lb 14 oz, and birth length of
4 X' m e# o; Z* d1 e5 T20 inches. He was breast-fed throughout the first year; G$ B# u0 x; T7 M
of life and was still receiving breast milk along with
, ~8 z5 D2 o1 ~6 L& b5 F& v/ j) Vsolid food. He had no hospitalizations or surgery,
- q! p# `( z! O" L9 fand his psychosocial and psychomotor development
7 b: n& w8 i- W; e% Y) D; Rwas age appropriate.
! f7 n2 f4 \ C* Q" _. qThe family history was remarkable for the father,
- b8 i; ^% ~1 _9 w# ]who was diagnosed with hypothyroidism at age 16,# q- q3 v0 I0 [# E8 R1 p
which was treated with thyroxine. The father’s7 H' C! _+ d) ^) n. ~: J0 K
height was 6 feet, and he went through a somewhat7 j+ I4 y F q- ^1 b% n# T
early puberty and had stopped growing by age 14." B# H$ p$ ~, k3 q
The father denied taking any other medication. The1 p2 X' |) P4 O) I
child’s mother was in good health. Her menarche
; k8 E @$ R! j, n6 Awas at 11 years of age, and her height was at 5 feet' D. K4 R( H9 w" z4 [ ^
5 inches. There was no other family history of pre-
. x7 k5 |' P+ ]; G: ycocious sexual development in the first-degree rela-
$ @; d7 _9 W; P: U$ M1 M1 Utives. There were no siblings.$ c p2 z8 q4 m7 K1 g# `" [
Physical Examination3 @7 g* T+ i |* }
The physical examination revealed a very active,, K* F+ K2 @& T! _
playful, and healthy boy. The vital signs documented
" ~. j% E# ^6 _ g7 |/ fa blood pressure of 85/50 mm Hg, his length was/ I7 u0 }# O0 l$ B; l+ P2 |. F
90 cm (>97th percentile), and his weight was 14.4 kg' q! X4 z# B* @# x
(also >97th percentile). The observed yearly growth# o: j9 F5 ?# ]: M% K# V
velocity was 30 cm (12 inches). The examination of4 W+ v! Y. ]$ O1 B1 `" N
the neck revealed no thyroid enlargement.9 u; [- ?1 L; z6 w
The genitourinary examination was remarkable for
, _& j0 C* ^2 X( z! y: A8 Menlargement of the penis, with a stretched length of
/ d1 o5 O: R& c) L8 cm and a width of 2 cm. The glans penis was very well% Q. A. F' T2 y( Z
developed. The pubic hair was Tanner II, mostly around! J! {1 J! j/ e! S
5408 R+ X7 m, \9 e8 g* L/ b& u* L
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
+ H% ^. f/ ~* ?; E0 M; X: othe base of the phallus and was dark and curled. The
; j6 O. K' `: itesticular volume was prepubertal at 2 mL each.+ O) p8 k" r0 h$ y! ^6 ~
The skin was moist and smooth and somewhat8 f3 Y* w% t2 L" o: c; |
oily. No axillary hair was noted. There were no# Z- z$ Q9 J) w! R$ A
abnormal skin pigmentations or café-au-lait spots.
" \8 J" N3 ]/ Q0 d4 K) GNeurologic evaluation showed deep tendon reflex 2+$ W @+ C8 e5 ` ^5 b6 m! v
bilateral and symmetrical. There was no suggestion! l6 T+ b2 _: [; w- \, u; m
of papilledema.8 q k5 |4 U2 t5 e4 R+ w, I
Laboratory Evaluation
+ [7 [! w, b$ D- k. F/ W$ ~The bone age was consistent with 28 months by
/ n+ \: W! d# O& v( V# d7 |+ pusing the standard of Greulich and Pyle at a chrono-
[0 H) H2 ?. B8 H* A; }logic age of 16 months (advanced).5 Chromosomal: `0 G3 ~4 Y0 a
karyotype was 46XY. The thyroid function test2 B @- d% N7 A( W& Y. P
showed a free T4 of 1.69 ng/dL, and thyroid stimu-
0 r: Y. I0 H3 v* u! Y6 V& klating hormone level was 1.3 µIU/mL (both normal).
6 c& h' m+ ]' ~4 q5 h, dThe concentrations of serum electrolytes, blood: H0 {( X% p$ |! u) F1 @" |1 g
urea nitrogen, creatinine, and calcium all were9 r: f8 T7 I9 p3 R, @. o2 \
within normal range for his age. The concentration/ O+ E. v1 G% I
of serum 17-hydroxyprogesterone was 16 ng/dL
1 d2 x% s: ]& t J! a/ p. L& W(normal, 3 to 90 ng/dL), androstenedione was 20% [7 @: q, U& ?& X& l [
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-
& w- y1 r; }4 @9 u# m! [terone was 38 ng/dL (normal, 50 to 760 ng/dL),, i$ Z; c Y, P4 o& q
desoxycorticosterone was 4.3 ng/dL (normal, 7 to6 a1 n5 R% U6 X4 |5 e4 x
49ng/dL), 11-desoxycortisol (specific compound S)
Z) @* T3 y E8 nwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-& c+ U6 R% B7 W7 |
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
0 N( v/ d" T4 ttestosterone was 60 ng/dL (normal <3 to 10 ng/dL),9 H: `6 I X H
and β-human chorionic gonadotropin was less than
6 D9 F1 k. n( o, x" h; R4 P1 Z/ Z5 mIU/mL (normal <5 mIU/mL). Serum follicular
; \* f3 ?5 y) B5 c" q" u' c7 xstimulating hormone and leuteinizing hormone
# G# q- _+ }/ g; y" h3 Y2 Pconcentrations were less than 0.05 mIU/mL' u0 R* p) ^: O# H. O! I+ y
(prepubertal).$ O, |3 `8 Z4 z% v0 v
The parents were notified about the laboratory" J! R7 d; i/ H7 Z
results and were informed that all of the tests were6 E6 ?4 L9 y+ q7 t* Q& a
normal except the testosterone level was high. The
$ q* C4 r C; g8 U H) sfollow-up visit was arranged within a few weeks to! c9 y4 W* Y, i! ?
obtain testicular and abdominal sonograms; how-+ ?. ?7 D" n; ~+ E z# C
ever, the family did not return for 4 months.9 T" D) O; G3 J& H, b3 U5 n
Physical examination at this time revealed that the
9 O& }$ ~1 \0 uchild had grown 2.5 cm in 4 months and had gained
% {# c z: I; w7 N9 H! V6 L# y Y! Q2 kg of weight. Physical examination remained
' F& a3 b/ O. runchanged. Surprisingly, the pubic hair almost com-
1 |& o( B3 h+ e2 H$ C0 z; Qpletely disappeared except for a few vellous hairs at
% N& n$ R; a: A- A( g) {3 Vthe base of the phallus. Testicular volume was still 2
$ `" |/ r2 O8 @+ m, z" h# @. omL, and the size of the penis remained unchanged.
1 l8 p) g! M0 c* UThe mother also said that the boy was no longer hav-
# w# E. W9 k- W6 g" O# |ing frequent erections.) Q3 T) P! B5 U# A! e
Both parents were again questioned about use of: r% n/ y4 M( C: m j) G
any ointment/creams that they may have applied to
4 q# r! W" W7 v6 V2 wthe child’s skin. This time the father admitted the. q' u. O4 ?0 u* e3 \% U
Topical Testosterone Exposure / Bhowmick et al 541
8 @4 I9 [9 W9 }8 Nuse of testosterone gel twice daily that he was apply-: t9 R6 d/ ]5 X9 a
ing over his own shoulders, chest, and back area for
+ b% \0 \2 C. K2 q, L) Ia year. The father also revealed he was embarrassed) Y& _ l* F; g9 ]4 Y4 T4 S, B4 d q
to disclose that he was using a testosterone gel pre-7 {. g& |- g) P8 |# [
scribed by his family physician for decreased libido/ y0 M' R2 e+ m( D: J* k5 i" u
secondary to depression.1 p- A% j$ }+ q, Q3 X, E
The child slept in the same bed with parents.+ v, F$ o3 {7 T" y
The father would hug the baby and hold him on his
& b( r& y. t5 }chest for a considerable period of time, causing sig-+ M" |9 r0 O' t; F% b' ]5 L" _( k1 Q
nificant bare skin contact between baby and father.
! v1 O. u u7 q3 Q, o+ K4 y6 F9 EThe father also admitted that after the phone call,
4 s, [! |' s5 V) s# h8 Ywhen he learned the testosterone level in the baby
- N( D& d2 m3 X1 Z( o3 e* _8 Cwas high, he then read the product information
5 ^" _5 @5 V1 h+ A8 C6 [packet and concluded that it was most likely the rea-2 N8 b9 m7 R- i
son for the child’s virilization. At that time, they5 z1 M4 b! Y; T5 T- L
decided to put the baby in a separate bed, and the
3 B, u8 t( l1 b4 P( y% e3 f" jfather was not hugging him with bare skin and had
) b0 W! y6 |0 {been using protective clothing. A repeat testosterone
) \" v6 E0 |0 U2 N8 Etest was ordered, but the family did not go to the0 k# d0 G9 r; B% H0 L
laboratory to obtain the test.3 y2 y- ^0 }6 w9 x( U) ~+ V7 m: \
Discussion
/ i7 M2 K7 o9 F" I/ uPrecocious puberty in boys is defined as secondary
' C1 @7 N+ G, Q# p2 z) Qsexual development before 9 years of age.1,48 V2 E7 E7 X4 X9 |/ |1 c
Precocious puberty is termed as central (true) when
8 b- i+ r( z' T+ k( a L/ @it is caused by the premature activation of hypo-
+ q' z X0 @5 Lthalamic pituitary gonadal axis. CPP is more com-9 ]* X/ N. @0 u, \, J" i2 |( r
mon in girls than in boys.1,3 Most boys with CPP
6 I4 g' Z j2 Y! t4 omay have a central nervous system lesion that is
7 H1 }8 |% b6 N6 e) X- G$ \6 xresponsible for the early activation of the hypothal-
& O" T3 i1 w3 I1 k! a' gamic pituitary gonadal axis.1-3 Thus, greater empha-0 A. l6 F$ i2 J) E7 \
sis has been given to neuroradiologic imaging in# V9 \6 G& y& r1 |/ |! A7 g) t
boys with precocious puberty. In addition to viril-
( l0 h, c. |- T l3 Cization, the clinical hallmark of CPP is the symmet-
9 ]; N. I, U, t, F1 w: frical testicular growth secondary to stimulation by
6 \8 t2 z+ _/ h0 W8 qgonadotropins.1,3
( _: f& @) A7 Z0 ^5 EGonadotropin-independent peripheral preco-
4 K1 [( l0 {% b& X; j' D7 |cious puberty in boys also results from inappropriate/ T* }# \8 y/ ?) b) E
androgenic stimulation from either endogenous or
* B4 y/ L. Z' c+ yexogenous sources, nonpituitary gonadotropin stim-
: Q' l3 l" ]4 J5 Pulation, and rare activating mutations.3 Virilizing4 j6 v% ]7 }, i$ r# b" }
congenital adrenal hyperplasia producing excessive# q7 i& r# ]* G) ~4 }
adrenal androgens is a common cause of precocious
/ n: ]4 n; S7 [& y, ]3 k% ipuberty in boys.3,42 q* w a0 O+ X- Y% E G% Q
The most common form of congenital adrenal
; f( r0 O* E7 whyperplasia is the 21-hydroxylase enzyme deficiency.
( P' V) c( x; V5 \/ JThe 11-β hydroxylase deficiency may also result in
# g4 s0 F9 Y/ R5 ~( ^- J3 bexcessive adrenal androgen production, and rarely,
: d$ W% v8 V+ B' p3 zan adrenal tumor may also cause adrenal androgen
5 G M( T2 m! G2 U' N3 c' z3 Lexcess.1,3
' v8 d* E; `. q% V* Vat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from4 |( i3 D. l, ?5 k [% b
542 Clinical Pediatrics / Vol. 46, No. 6, July 20075 V$ F2 \4 }& {, D8 T
A unique entity of male-limited gonadotropin-, U0 {9 L' T! S& ]! b( e/ P+ v& o
independent precocious puberty, which is also known
6 o6 n8 ]5 E8 M3 Pas testotoxicosis, may cause precocious puberty at a" S* N4 [7 V' z4 w
very young age. The physical findings in these boys
# Q3 A* L6 _1 h( P3 n9 ?, pwith this disorder are full pubertal development,6 ~$ Z( n- f Z5 P' G9 E
including bilateral testicular growth, similar to boys( o& h4 Y: ]$ n5 t% h7 W+ x$ J
with CPP. The gonadotropin levels in this disorder
. E: i! y+ H3 @2 h* O. o7 hare suppressed to prepubertal levels and do not show* T {6 Z. }$ P, G4 ^
pubertal response of gonadotropin after gonadotropin-
1 D& u2 Q8 ?5 A7 Q3 p0 G9 Z0 Sreleasing hormone stimulation. This is a sex-linked
1 ^, a1 `$ l# M; @) Q+ g, b" qautosomal dominant disorder that affects only
! P( w% ]$ |1 x- Q7 V& _$ ?males; therefore, other male members of the family0 F" B- o9 w* G8 }. ~& M6 K
may have similar precocious puberty.3
, j4 g3 C$ J v# _6 o' X% O* N* \In our patient, physical examination was incon-
; S0 K+ W& L: j9 Gsistent with true precocious puberty since his testi-: j5 z/ _2 A8 B* B/ }1 C* I% K D
cles were prepubertal in size. However, testotoxicosis9 p8 R( P+ K2 }7 E( I
was in the differential diagnosis because his father
" O& P! G$ F t/ _9 C xstarted puberty somewhat early, and occasionally,
* [1 H3 S% t7 h6 p* G* g+ E! _testicular enlargement is not that evident in the7 O, E# F2 F; D5 W$ m2 H8 q! S
beginning of this process.1 In the absence of a neg-: w1 `+ Q0 ^/ s
ative initial history of androgen exposure, our
" G) I) J3 C9 \$ f: c4 Ybiggest concern was virilizing adrenal hyperplasia,
& T9 a' }& l keither 21-hydroxylase deficiency or 11-β hydroxylase
: ]( j$ @* h$ @2 u7 Adeficiency. Those diagnoses were excluded by find-: i4 Z! e+ Y1 c3 T, l; s- \ d, t- Q7 v
ing the normal level of adrenal steroids.
: a- H# w9 Y* @' i1 LThe diagnosis of exogenous androgens was strongly
5 y& D( ]4 }' Ksuspected in a follow-up visit after 4 months because
2 e8 @( w2 g6 l+ Nthe physical examination revealed the complete disap-
$ j* e% K# |' n5 Spearance of pubic hair, normal growth velocity, and
) W2 x7 H9 z6 [/ j7 Sdecreased erections. The father admitted using a testos-
, V" i# `4 v- J7 ]8 Y mterone gel, which he concealed at first visit. He was
% a- r: B' {# vusing it rather frequently, twice a day. The Physicians’
6 Z; w* J+ k$ T; h/ _* ]Desk Reference, or package insert of this product, gel or
+ { E" R0 P, @9 ^" [* q+ Zcream, cautions about dermal testosterone transfer to
) X$ ~2 }9 Z% Aunprotected females through direct skin exposure.* H ` [3 `) L4 ^* ?- }$ O, }
Serum testosterone level was found to be 2 times the
. `, u& X" [5 a* E3 o& r' m/ ~( \5 Abaseline value in those females who were exposed to
" I n; I U6 Q- teven 15 minutes of direct skin contact with their male
2 T+ ] }$ A* | g: ?- D8 F {1 Hpartners.6 However, when a shirt covered the applica-
8 w3 S; J( L( D1 @. j( b% | ]tion site, this testosterone transfer was prevented.
1 ?) Z- e/ e( s$ Q' S8 e# yOur patient’s testosterone level was 60 ng/mL,
& }. J2 X9 C+ L% s0 S- J) z+ p% zwhich was clearly high. Some studies suggest that
6 r+ ]- T* i1 M- Jdermal conversion of testosterone to dihydrotestos-
) Z- M) |7 ^% \+ ~# O& y; a+ V( ?terone, which is a more potent metabolite, is more
. k; L- s9 U; ?( v; w( Yactive in young children exposed to testosterone
! _* A$ K; v8 @- Z I4 j0 kexogenously7; however, we did not measure a dihy-( E4 | \9 K2 L; U9 K& {9 g% Q+ ?) M
drotestosterone level in our patient. In addition to) o \8 E9 D; J9 g) h
virilization, exposure to exogenous testosterone in! C, }" T: h/ `+ l" S
children results in an increase in growth velocity and
6 M5 @- Q. _% fadvanced bone age, as seen in our patient.
& v$ ?9 b7 F4 X! k. XThe long-term effect of androgen exposure during
; e# R3 U$ L/ y8 ?/ C$ Bearly childhood on pubertal development and final, E0 o- Q$ j n& P6 P f9 K
adult height are not fully known and always remain
3 H& P. K( J% H5 H0 j' S5 `1 C9 l" t0 ba concern. Children treated with short-term testos-
6 h% O) B3 |8 ^' n3 k" `terone injection or topical androgen may exhibit some
( G6 ?1 J! C* `& facceleration of the skeletal maturation; however, after( r& G5 s6 R+ E% q z- r: O+ ^. n. V
cessation of treatment, the rate of bone maturation
% k. w% P, i; |- |3 C% K. ndecelerates and gradually returns to normal.8,98 P6 C; ?1 ?% p' A( A
There are conflicting reports and controversy, G$ _0 a& i+ Y+ F
over the effect of early androgen exposure on adult
: K1 h1 N4 A/ y( cpenile length.10,11 Some reports suggest subnormal. @0 i% y0 ]8 K" \) n" E$ V
adult penile length, apparently because of downreg-
9 J8 F1 |. D- q/ Y3 U. tulation of androgen receptor number.10,12 However,
6 d* h) E# {/ C8 K5 @6 {+ dSutherland et al13 did not find a correlation between3 ~1 @* X% j% N5 O
childhood testosterone exposure and reduced adult$ g6 n5 ~6 | c: e- h
penile length in clinical studies.( _% Z! Z3 v8 n b, b p* p
Nonetheless, we do not believe our patient is# d* N9 a% Q7 j6 o" P. V" t
going to experience any of the untoward effects from
# b( E3 [, [8 B5 Etestosterone exposure as mentioned earlier because
6 j: E' B9 P0 {, b* D0 L2 Qthe exposure was not for a prolonged period of time.
1 Z. d4 t9 }2 mAlthough the bone age was advanced at the time of$ i& G' g, \ u j D" x
diagnosis, the child had a normal growth velocity at
! r$ u/ R) v, G. @# |/ c- Lthe follow-up visit. It is hoped that his final adult f: i2 m) e L5 F! `' D
height will not be affected.8 v9 n* @) X8 ~" \: I, g
Although rarely reported, the widespread avail-- ]/ C& x5 ~: |8 d' ~
ability of androgen products in our society may
1 K+ L5 y7 j; Rindeed cause more virilization in male or female
3 I7 ]7 Z/ m/ W: Y" I6 Achildren than one would realize. Exposure to andro-
% @1 y: _) o' L- ~: D' Ugen products must be considered and specific ques-
A# }- R3 }. ]tioning about the use of a testosterone product or6 T$ ?0 Y) I/ K* [ \0 X4 K. X+ d
gel should be asked of the family members during
4 y7 P4 M# {0 N2 J0 j( Rthe evaluation of any children who present with vir-
- z3 q/ Z+ B* B1 S9 R/ \) g; M9 qilization or peripheral precocious puberty. The diag-3 n3 s" d6 R7 ~: _4 J) ]
nosis can be established by just a few tests and by; t% O8 x O) T* J# L' E
appropriate history. The inability to obtain such a: S1 t: M" r8 A! P" x+ I
history, or failure to ask the specific questions, may: {# h7 Z8 j$ V6 n- ]$ `
result in extensive, unnecessary, and expensive5 S/ i3 d/ z& n5 _) z% J" j
investigation. The primary care physician should be
; c/ @' B9 G7 j* B+ {. Iaware of this fact, because most of these children
" Q' g" n' N* @7 K$ p; Jmay initially present in their practice. The Physicians’0 G5 v2 c# J$ w3 I, O m; P9 p
Desk Reference and package insert should also put a
+ D, ^2 ?& g( ]" `8 twarning about the virilizing effect on a male or0 ?: z4 c& ]8 V& D3 u% W
female child who might come in contact with some-
" B4 w. _8 H" c! J, c! \4 J6 d" Yone using any of these products.
6 V, M4 h6 s* lReferences
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and puberty in the male. In: Sperling MA, ed. Pediatric
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2002: 565-628.
5 U$ ~$ @4 z4 j% J" u! w5 T+ K2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
7 _ ^0 e9 X8 i/ A8 q* o+ {+ @puberty in children with tumours of the suprasellar pineal/ L: @* T+ k& E' B0 ~5 h" f& l( y7 ]
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+ p& { A; f5 h4 m3. Lee PA. Puberty and its disorders. In: Lifshitz F, ed./ x, ^5 ^$ [ K7 V4 C) s
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Dekker Inc; 2003:211-238.
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7 b( q% i; L" {; }2 ^+ Sdevelopment in a two-year-old boy induced by topical: a3 ]: l% T/ K' o
exposure to testosterone. Pediatrics. 1999;104:e23.+ I e1 _, u1 d) I
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Skeletal Development of the Hand and Wrist. 2nd ed.
# _5 b6 T v" ~- n8 }: X7 i! D; KStanford, CA: Stanford University Press; 1959.: }9 k# T( G( E
6. Physicians’ Desk Reference. Androgel 1% testosterone,) B9 O/ b9 ]9 h
Unimed Pharmaceutical Inc. Montvale, NJ: Medical( t' h+ n2 a; X/ n/ i3 R! W- `8 Z- F
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