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is a significant concern for physicians. Central
% T, k) K% Y& i0 I( {precocious puberty (CPP), which is mediated
& Y9 Y) g% Z& W# d( N6 N% m9 E Rthrough the hypothalamic pituitary gonadal axis, has
6 ^5 q, [+ Y- y& L; |, R# Sa higher incidence of organic central nervous system8 h! v: {" f9 F: Z: H, m+ k
lesions in boys.1,2 Virilization in boys, as manifested
' o; _8 J0 C9 @* }* aby enlargement of the penis, development of pubic
6 H2 H0 q" H0 |' xhair, and facial acne without enlargement of testi-% ]8 c5 z! x8 p+ i7 g" ~
cles, suggests peripheral or pseudopuberty.1-3 We
+ e4 s1 \3 @( h3 N4 b9 g3 breport a 16-month-old boy who presented with the
+ u6 |3 B5 I' T* h- venlargement of the phallus and pubic hair develop-1 u) E2 H# X! A- d1 ?
ment without testicular enlargement, which was due( W8 F3 R: y: {' |
to the unintentional exposure to androgen gel used by
' j! a( m$ R) Z$ C1 h8 Sthe father. The family initially concealed this infor-
! z8 S. I- o; J6 Pmation, resulting in an extensive work-up for this) W& n9 p7 E; a) o
child. Given the widespread and easy availability of* q. G8 A1 w# r3 u% V) K
testosterone gel and cream, we believe this is proba-( T0 u1 b) `; f! w5 V
bly more common than the rare case report in the2 C% n+ Y0 i9 e- Q9 y$ g
literature.4* v, K! F2 v" y3 g: ]. U+ t
Patient Report
0 @. o- _) A% C# Y, WA 16-month-old white child was referred to the
8 N2 F6 j! Q+ |endocrine clinic by his pediatrician with the concern
) k. J4 r5 v7 ~; F2 F: F' I; Z zof early sexual development. His mother noticed/ }0 S5 M1 N6 v
light colored pubic hair development when he was3 L5 m, K& [) b L. v
From the 1Division of Pediatric Endocrinology, 2University of
6 w5 w" Y# e1 I6 f3 E* G7 z8 ~South Alabama Medical Center, Mobile, Alabama.% U: s9 z; u! _* n& X* T5 x0 d1 _
Address correspondence to: Samar K. Bhowmick, MD, FACE,. g; ^4 E+ S9 r0 a, Y0 w" X
Professor of Pediatrics, University of South Alabama, College of
; n3 g5 C. T* S* D! uMedicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;
8 H p& Q( h( V6 J4 ?e-mail: [email protected].; Z4 |! {! L. Z1 o# Z3 C2 ?
about 6 to 7 months old, which progressively became- H( ]# n+ S5 B. `
darker. She was also concerned about the enlarge-" J: L- A+ c# U
ment of his penis and frequent erections. The child1 o1 o7 X# T. B" o0 Q
was the product of a full-term normal delivery, with
6 {1 z- Q: d3 E4 R9 x. F" V4 Pa birth weight of 7 lb 14 oz, and birth length of2 W- W7 v% |' U( n1 Y* T' J) G
20 inches. He was breast-fed throughout the first year
9 ~$ ?: U; J4 m" w0 a- Hof life and was still receiving breast milk along with
' r5 o; b) I/ Y* Hsolid food. He had no hospitalizations or surgery, k' e/ b, \. p; J8 `: {
and his psychosocial and psychomotor development% a1 O1 L: b, \
was age appropriate.
1 y0 Q7 a4 Q* P, R% _The family history was remarkable for the father,- ?, B! [1 ]6 u. c
who was diagnosed with hypothyroidism at age 16,- X# ^" t7 `- u
which was treated with thyroxine. The father’s7 i* h5 s5 I9 b! o- C
height was 6 feet, and he went through a somewhat
. P( x- [: v' c8 W( \early puberty and had stopped growing by age 14.
$ w4 L( N5 N3 D: o' B/ _' W2 PThe father denied taking any other medication. The
5 T* g! u* V9 B! m& C6 Dchild’s mother was in good health. Her menarche( K# D5 M0 @8 @% R. C
was at 11 years of age, and her height was at 5 feet4 {- x1 }6 z. {9 e
5 inches. There was no other family history of pre-, [& U' O8 g6 _6 o: `9 i. ]
cocious sexual development in the first-degree rela-3 i! S( H$ }. L# Z5 u/ C
tives. There were no siblings.5 {: I+ I4 K$ p1 ^
Physical Examination& g3 |& M, r" m/ f& t+ z/ B7 }
The physical examination revealed a very active,$ c- J. ]% Y$ I
playful, and healthy boy. The vital signs documented
4 o' G; |" w2 c# R5 ga blood pressure of 85/50 mm Hg, his length was
5 @' \. M" a4 I* B3 h90 cm (>97th percentile), and his weight was 14.4 kg
5 Z. h5 m! J( E0 s* ^2 W) S(also >97th percentile). The observed yearly growth
" B0 u& K/ ]/ N( G! tvelocity was 30 cm (12 inches). The examination of
; Y/ w) w+ l1 z% j" K' Bthe neck revealed no thyroid enlargement.) `6 y: O2 ]; y( U4 s& I6 h; X
The genitourinary examination was remarkable for
' B- {$ o/ i+ g$ w. xenlargement of the penis, with a stretched length of
# H9 P7 u+ i a( e0 [8 cm and a width of 2 cm. The glans penis was very well3 t9 O) A- P: ~$ L
developed. The pubic hair was Tanner II, mostly around
6 s0 E$ E8 W& ]' s540
" @. P* x( {, o1 y- W2 rat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
2 T. l+ K( n! Q, _0 Ethe base of the phallus and was dark and curled. The3 S' A7 V- J, L C: b! q$ W
testicular volume was prepubertal at 2 mL each.! J# Y5 C% ~) O$ k' \% T) s
The skin was moist and smooth and somewhat
( y' |. Z" e. m0 Foily. No axillary hair was noted. There were no! x8 _1 J9 `2 ?
abnormal skin pigmentations or café-au-lait spots.
) i; X' k% m2 }: Y5 eNeurologic evaluation showed deep tendon reflex 2+4 C# H m$ t0 Y, g% O$ F
bilateral and symmetrical. There was no suggestion" `% |) z: W! G
of papilledema.
4 c9 d5 x) _) V& V; i' o5 \8 wLaboratory Evaluation
/ o: }* R+ u% N$ B2 |% H) B7 OThe bone age was consistent with 28 months by
9 n+ `' O* R( p8 d0 t. k; Vusing the standard of Greulich and Pyle at a chrono-
; b9 N4 N. p3 R6 c& Zlogic age of 16 months (advanced).5 Chromosomal
0 ?: N2 R5 ~: }$ D* P% ckaryotype was 46XY. The thyroid function test
G2 I0 F* Y6 z+ B4 D4 Y% Bshowed a free T4 of 1.69 ng/dL, and thyroid stimu-
$ @7 c/ m) J, B% t% F9 Ylating hormone level was 1.3 µIU/mL (both normal).9 W: K. r4 l8 Z3 Z+ Y- Z$ C1 W
The concentrations of serum electrolytes, blood" d' R& k/ L' g; k4 o
urea nitrogen, creatinine, and calcium all were
6 W* a4 m2 q+ s1 f$ Kwithin normal range for his age. The concentration
; h% _; y* J* Z/ m1 h4 Cof serum 17-hydroxyprogesterone was 16 ng/dL0 u0 W5 E5 w+ ` q7 D/ F# f2 Y* I
(normal, 3 to 90 ng/dL), androstenedione was 20
' }. `' D; i9 l1 E/ E* Gng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-' X# j0 Y/ O, a7 c9 g
terone was 38 ng/dL (normal, 50 to 760 ng/dL),( Z/ e+ p- R7 \8 K" q
desoxycorticosterone was 4.3 ng/dL (normal, 7 to, J6 G A7 z4 D7 ]
49ng/dL), 11-desoxycortisol (specific compound S)
7 e5 c7 C* _5 v+ z9 mwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-8 B% f" G5 _$ {
tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total6 ^' x& T+ Z0 G. \% S0 u) \% c
testosterone was 60 ng/dL (normal <3 to 10 ng/dL),
% [; A/ C& ]9 T: e0 Fand β-human chorionic gonadotropin was less than7 k) U: W9 ^8 T& M/ d. P+ q
5 mIU/mL (normal <5 mIU/mL). Serum follicular9 w2 e9 w! L) ^) s: m a+ I
stimulating hormone and leuteinizing hormone
5 ^7 U i$ r5 t. t7 fconcentrations were less than 0.05 mIU/mL
0 f3 z5 A' u6 d& c& h* h" A& u(prepubertal).6 B- ]5 Y3 o Z! f6 e$ o
The parents were notified about the laboratory5 W$ k3 d7 r( Y+ K
results and were informed that all of the tests were$ z8 J, X* d) A" r. S0 ]
normal except the testosterone level was high. The
2 C: M! T, r+ m3 U, [follow-up visit was arranged within a few weeks to
# ?* {" h- j. k5 {2 O; {obtain testicular and abdominal sonograms; how-
6 _9 @4 h$ `5 t# ^2 h5 Y. jever, the family did not return for 4 months.
+ k/ ]: Q" b- U2 p, ^6 PPhysical examination at this time revealed that the
m% t$ |; ^( Z9 A/ D, U( ^* Z7 [child had grown 2.5 cm in 4 months and had gained) I8 ^2 D- T& `2 J8 I
2 kg of weight. Physical examination remained
9 R8 G, |7 Z8 [# Hunchanged. Surprisingly, the pubic hair almost com-5 N; h9 k" Q3 {, m' `
pletely disappeared except for a few vellous hairs at# C$ ^; Y+ u" q% w& t5 p3 y# `
the base of the phallus. Testicular volume was still 2) q$ e H/ T3 v( E3 V
mL, and the size of the penis remained unchanged.; Y" t! C- B; ]) x2 X+ k, L$ ~
The mother also said that the boy was no longer hav-
2 a! s& ?4 _9 Hing frequent erections.$ W, I. r/ K" W8 v0 V5 T
Both parents were again questioned about use of
. P$ s& ^' ]: i1 Y; pany ointment/creams that they may have applied to
4 |0 a! A: F3 W" a: othe child’s skin. This time the father admitted the
8 ]# b9 p* _4 E/ f, KTopical Testosterone Exposure / Bhowmick et al 541
: o. M8 u2 l. @( j9 E, {+ Puse of testosterone gel twice daily that he was apply-# p* v* s! ^. U7 L
ing over his own shoulders, chest, and back area for# r# \2 K6 w b
a year. The father also revealed he was embarrassed
F3 l5 e) J4 w2 B+ Jto disclose that he was using a testosterone gel pre-
: a4 o/ z1 X- A ]* w8 wscribed by his family physician for decreased libido
- t& ~; {* z5 {9 p( vsecondary to depression./ K) t a: O4 E0 q
The child slept in the same bed with parents.6 \7 t* ^9 f3 J" l# ?! _
The father would hug the baby and hold him on his: i/ ^) U: r8 ]7 `/ h! D( m5 c
chest for a considerable period of time, causing sig-
6 J# h0 ^& Z5 j9 N- r, o5 Gnificant bare skin contact between baby and father.
7 R$ H5 _% j$ K1 o- ^' M3 }The father also admitted that after the phone call,
+ l0 C' |: X% }/ Hwhen he learned the testosterone level in the baby
, x* u; y- U, N* G0 Qwas high, he then read the product information/ C9 m! |$ ?- c. F% f" @! W6 \
packet and concluded that it was most likely the rea-& {7 N7 G' B6 p
son for the child’s virilization. At that time, they9 w4 X% ^* I* v
decided to put the baby in a separate bed, and the
9 _% Y0 e4 R9 O+ W& Nfather was not hugging him with bare skin and had
# \4 \, x, `5 y# M. x9 _9 ?been using protective clothing. A repeat testosterone/ z. j9 N$ |& x, ~( B: ^
test was ordered, but the family did not go to the+ [8 Q- ^( K! b: i& p! |
laboratory to obtain the test.4 S% f1 f( {( z- e6 s) T+ _# e1 Q
Discussion2 H7 S+ q0 v. `) R
Precocious puberty in boys is defined as secondary% ^+ X i! l4 x! H9 d0 q8 ~
sexual development before 9 years of age.1,4
( l( j+ t/ o9 h+ ^* NPrecocious puberty is termed as central (true) when. m0 ~% w7 G& O4 A$ u
it is caused by the premature activation of hypo-
( V7 o; k% r; o( jthalamic pituitary gonadal axis. CPP is more com-
3 b' m" \% m3 D4 R/ k: B( Smon in girls than in boys.1,3 Most boys with CPP' C0 U+ E9 c0 {
may have a central nervous system lesion that is& T' s, C: w/ M2 v$ Q8 G
responsible for the early activation of the hypothal-
- C6 ]( `8 j: f3 Kamic pituitary gonadal axis.1-3 Thus, greater empha-
& P, y& @& q) z. ?# o J9 G {- \sis has been given to neuroradiologic imaging in
+ \& J. ?9 ~/ @+ G/ g7 |boys with precocious puberty. In addition to viril-6 Q, r5 a3 [% M6 k& ^ b+ z
ization, the clinical hallmark of CPP is the symmet-1 c$ `8 l. o1 @) V$ q
rical testicular growth secondary to stimulation by: j; j4 B7 C, I4 o3 F1 V
gonadotropins.1,3
& W+ |/ W* O7 y1 D+ O% r( cGonadotropin-independent peripheral preco-" w* E' A8 c" O/ q
cious puberty in boys also results from inappropriate
) E4 a$ R: n3 o" V6 S4 sandrogenic stimulation from either endogenous or& d. G- X B9 W) x& H( v
exogenous sources, nonpituitary gonadotropin stim-0 l4 s% [6 F. S9 T9 V4 p, P& `& n
ulation, and rare activating mutations.3 Virilizing* |5 T; ?0 ]8 a' s1 b, D
congenital adrenal hyperplasia producing excessive" j8 t: |5 m4 a0 S
adrenal androgens is a common cause of precocious
1 v& y: D( `8 ?5 G) U/ X! K# _7 Z3 Ipuberty in boys.3,46 V) q- d. ]" P
The most common form of congenital adrenal% b2 K6 f% x' c
hyperplasia is the 21-hydroxylase enzyme deficiency.
! n& N% ?; t7 DThe 11-β hydroxylase deficiency may also result in7 E% r' I O2 G5 R5 h
excessive adrenal androgen production, and rarely,/ @+ [2 Z2 Z7 T' Y0 \2 o" r! s
an adrenal tumor may also cause adrenal androgen
9 W5 H+ W' l; D( x+ s& @+ t5 A$ qexcess.1,33 n4 e6 M8 Z/ q& X; f& T
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
& {/ p8 U7 c! n3 A/ J+ Q8 B542 Clinical Pediatrics / Vol. 46, No. 6, July 20076 l+ u+ b$ }# a: x! |: l8 t; z; n
A unique entity of male-limited gonadotropin-
" J8 q) G8 N! s5 [, f! cindependent precocious puberty, which is also known* i z, Y7 J" c: e* Y& r8 ]) v
as testotoxicosis, may cause precocious puberty at a; r; @1 m3 y- K1 N" A/ j. M) s
very young age. The physical findings in these boys
6 j8 w- L* ?$ n# Ewith this disorder are full pubertal development,7 x8 K7 n* ~7 W1 P7 I9 A* w y3 {
including bilateral testicular growth, similar to boys
6 Y% {5 D1 W) P/ E8 P( D* Iwith CPP. The gonadotropin levels in this disorder! }' Q! L; b, J( q4 B* T2 R6 D
are suppressed to prepubertal levels and do not show5 N' r7 `6 o6 ?; s7 r$ R. S
pubertal response of gonadotropin after gonadotropin-
& Z$ e- Q, V5 W/ U* M) Zreleasing hormone stimulation. This is a sex-linked
/ N9 N! ~; ^: @autosomal dominant disorder that affects only9 v T( i( H4 B D
males; therefore, other male members of the family
7 t: Z# ?: F: g) s$ F& ]may have similar precocious puberty.3
/ [; V7 N6 I, HIn our patient, physical examination was incon-
6 u* ` e s5 Z ~' L4 V# o- Hsistent with true precocious puberty since his testi-) n# |3 Z3 @% h
cles were prepubertal in size. However, testotoxicosis
' h1 k6 ?: l ewas in the differential diagnosis because his father
/ J# ~$ a; X" A2 e& }started puberty somewhat early, and occasionally,
5 Y, ]3 ^ S4 }& d0 S4 m+ Ttesticular enlargement is not that evident in the/ {/ t, R% }+ M* S' |8 W2 b
beginning of this process.1 In the absence of a neg-: w7 z0 v; E+ C" j
ative initial history of androgen exposure, our
3 z0 G' X, `1 f3 c" S+ ~3 Kbiggest concern was virilizing adrenal hyperplasia,
) s, { B" d; i4 z0 n( Weither 21-hydroxylase deficiency or 11-β hydroxylase
" b0 _0 T7 I2 {& I/ Y6 kdeficiency. Those diagnoses were excluded by find-
3 B+ z' A, \( r, Ling the normal level of adrenal steroids.
4 X/ j* w: u; a) j/ f) `The diagnosis of exogenous androgens was strongly
: q- u' \5 F" l% q: psuspected in a follow-up visit after 4 months because7 s) x4 g/ S" L. J0 ~7 O( ^3 O
the physical examination revealed the complete disap-! O' L& U! n2 E. j- V$ f( J
pearance of pubic hair, normal growth velocity, and1 J5 e+ k1 J6 l* `% g" c
decreased erections. The father admitted using a testos-
/ i9 D! u( }0 A: m5 e+ W! Iterone gel, which he concealed at first visit. He was
8 s# G" z& I& @# i0 uusing it rather frequently, twice a day. The Physicians’
# z! q0 z9 i" E" C/ r4 ODesk Reference, or package insert of this product, gel or% M7 G2 u3 p) u0 v; {' W, @+ p' m" S3 D
cream, cautions about dermal testosterone transfer to9 z$ p6 ?* ~+ v3 ]1 D! k9 H
unprotected females through direct skin exposure.; `5 z* Y2 P& Y8 b% i4 v
Serum testosterone level was found to be 2 times the
8 i8 f. M6 H( Ibaseline value in those females who were exposed to
1 H* J& y& ]2 C' G& s- Zeven 15 minutes of direct skin contact with their male
, V7 m$ B' l. b" X& epartners.6 However, when a shirt covered the applica-# Z% Q) [6 _: B0 B( _. O0 e1 i9 ?
tion site, this testosterone transfer was prevented.
5 x L/ {) h. |" f& q yOur patient’s testosterone level was 60 ng/mL,/ s, R, x% l3 y
which was clearly high. Some studies suggest that
4 z6 m$ b% W4 w3 J4 E4 k# Wdermal conversion of testosterone to dihydrotestos-4 ^5 s2 i% t `. q4 M' p! O
terone, which is a more potent metabolite, is more' H7 \* A/ [& X5 L1 J, O1 d) }
active in young children exposed to testosterone
+ N, W: W4 Q* [% v5 kexogenously7; however, we did not measure a dihy-" x) s! x$ @9 h0 b
drotestosterone level in our patient. In addition to
8 E( W6 [% M3 g: Nvirilization, exposure to exogenous testosterone in
& U+ U* y' V8 y; o2 v$ d1 y- lchildren results in an increase in growth velocity and6 d4 B3 m8 [+ ]! ?5 J5 n: g
advanced bone age, as seen in our patient.
1 t3 N9 S* z M3 R4 BThe long-term effect of androgen exposure during
9 L& B* T' S# D% @* Tearly childhood on pubertal development and final: G; ~. z* t" ^/ b
adult height are not fully known and always remain
; d7 E, P' I) [/ C( i- y- ga concern. Children treated with short-term testos-
# L% d$ I8 P8 H% @% r7 t7 [. u: `terone injection or topical androgen may exhibit some& ^ H1 c0 Y8 @7 X" k0 |4 x
acceleration of the skeletal maturation; however, after+ z/ Y3 C0 F' x3 N `3 L( J
cessation of treatment, the rate of bone maturation
k2 \" `; O0 K; Q. _% A% t6 ]* q) udecelerates and gradually returns to normal.8,9/ l: N l- j7 F3 y& x G4 f
There are conflicting reports and controversy+ j! x9 \- }! {: M- h
over the effect of early androgen exposure on adult9 f" v- F" [7 A h
penile length.10,11 Some reports suggest subnormal* F9 \* M! H: T6 a1 [) o
adult penile length, apparently because of downreg-7 [8 t& H1 g |8 b* S/ n. R$ i
ulation of androgen receptor number.10,12 However,
0 ]( J& L+ z' A2 W5 i; sSutherland et al13 did not find a correlation between6 ?& b" Q- g! w" E6 P/ u
childhood testosterone exposure and reduced adult
- Q- Q+ a: G+ F7 hpenile length in clinical studies.
& M: D& r8 j, H& n- }Nonetheless, we do not believe our patient is I j: k3 r2 B3 _
going to experience any of the untoward effects from _& I: \, e* @& P3 i0 @: d- ^
testosterone exposure as mentioned earlier because& ` O! E' ^+ Q" @
the exposure was not for a prolonged period of time.0 @0 r: B7 s+ s# D) n& Z0 f% d9 a
Although the bone age was advanced at the time of
7 F& R% d5 B" Adiagnosis, the child had a normal growth velocity at
8 X5 v4 Q: t: f) O F& t$ C7 I; mthe follow-up visit. It is hoped that his final adult# [0 K( m- e/ |6 d9 x# Z5 D
height will not be affected.
6 F) G5 b6 I- d2 { C4 U) eAlthough rarely reported, the widespread avail-0 T/ {7 s& j" ^$ i4 n& }
ability of androgen products in our society may
+ F9 ?6 i3 Z O( q+ m. H% ^& T: xindeed cause more virilization in male or female" H. @* `: i/ u9 Z
children than one would realize. Exposure to andro-
! N. n" w$ ~, U+ K+ }5 a0 f; Pgen products must be considered and specific ques-
- b# L! {9 V3 K+ ytioning about the use of a testosterone product or3 W( g7 A! s% _8 H. l: e
gel should be asked of the family members during
w. r, m9 P- P/ L$ ? Z# c8 `2 @' Ithe evaluation of any children who present with vir-0 Y7 D3 a; X* K8 h" J: e; E! W
ilization or peripheral precocious puberty. The diag-
' w/ y3 b, w6 i0 Y: nnosis can be established by just a few tests and by' D* [" `" T6 H1 h# p# e8 ?
appropriate history. The inability to obtain such a
( h5 A7 {, x; c$ @# b) {history, or failure to ask the specific questions, may
: }2 x2 U) R J# O$ | {/ i$ wresult in extensive, unnecessary, and expensive/ K- D& `6 v& p3 \4 O5 C: q2 U
investigation. The primary care physician should be
5 P% X0 y& }3 T5 r' v3 Caware of this fact, because most of these children3 r3 O4 R" N$ d, ~4 u
may initially present in their practice. The Physicians’
0 x. D& P. v1 ]! n7 SDesk Reference and package insert should also put a, I5 z- W9 K6 G% R
warning about the virilizing effect on a male or. \ Y) \- R p5 C
female child who might come in contact with some-
) e) G) s m4 e R9 O0 [7 Eone using any of these products.) A( _* A" v& K/ e- ^( Y3 }
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3 i+ L4 j8 |8 ?% p# W+ l- u land puberty in the male. In: Sperling MA, ed. Pediatric
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! {' b; f* V2 Y v+ r/ ]2002: 565-628.8 o2 P. s' N: w8 Z' k4 E I: x
2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious
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% N& o* k. l5 n- z/ o$ {: yDekker Inc; 2003:211-238.
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development in a two-year-old boy induced by topical3 W `5 T6 [2 G! j+ ?
exposure to testosterone. Pediatrics. 1999;104:e23.
8 ~+ a$ D: H" |0 i* q3 |6 }! U2 F5. Greulich WW, Pyle SI, eds. Radiographic Atlas of
3 D9 C% b$ ?- e D1 ESkeletal Development of the Hand and Wrist. 2nd ed.1 U; }, w2 X5 |" `3 |) r4 J' T
Stanford, CA: Stanford University Press; 1959.0 @' p2 N8 B' _9 Y1 [
6. Physicians’ Desk Reference. Androgel 1% testosterone,1 S5 I" L/ j: u0 @7 `
Unimed Pharmaceutical Inc. Montvale, NJ: Medical
/ s) \9 P4 y" C. v6 X: eEconomics Company, Inc; 2004:3239-3241.# Z) D$ J9 W3 p' c1 z2 F
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