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is a significant concern for physicians. Central- {$ G! a9 W5 z# `6 I: W2 `8 {9 E
precocious puberty (CPP), which is mediated% g; ^9 O7 F) P6 Y: U7 A
through the hypothalamic pituitary gonadal axis, has
. [7 \9 |" W; ma higher incidence of organic central nervous system6 f: }# b, T0 R& U
lesions in boys.1,2 Virilization in boys, as manifested
% C% Y( z5 F; l" i: q2 d$ g& Dby enlargement of the penis, development of pubic$ @8 k! n' q. {' f$ W C
hair, and facial acne without enlargement of testi-
" T2 g0 d& `' `0 z- e! Ccles, suggests peripheral or pseudopuberty.1-3 We
7 d, m+ \5 J7 {% N. zreport a 16-month-old boy who presented with the
/ y/ U8 d- C2 A+ I7 {4 x* \enlargement of the phallus and pubic hair develop-
4 |2 k3 F( q# {1 F2 A+ [$ P) ?6 Yment without testicular enlargement, which was due: Q. O s/ H! L4 p6 }0 N, s
to the unintentional exposure to androgen gel used by# r# e' s: R# ^* U) P( ~1 G9 o
the father. The family initially concealed this infor-
0 M1 |. L0 K. N/ @1 ymation, resulting in an extensive work-up for this
0 _8 @7 \3 c; D' c; X9 G/ Tchild. Given the widespread and easy availability of2 q% @4 a9 c+ L0 _1 A
testosterone gel and cream, we believe this is proba-8 U( [+ R, s; \5 y
bly more common than the rare case report in the
+ J- }+ m# _5 X' vliterature.42 h5 W r' w) Y
Patient Report3 \, ]$ u# u" M* a5 L0 \
A 16-month-old white child was referred to the
2 i* z* v& ~1 A! o: H4 x7 Z2 b5 pendocrine clinic by his pediatrician with the concern
. j! X u/ n5 ]& }7 P) Gof early sexual development. His mother noticed' \" }" _" U) `, {% u W+ A4 Y
light colored pubic hair development when he was s$ z* j1 K- N- K% o' v* f v
From the 1Division of Pediatric Endocrinology, 2University of6 p# ?: k6 \' k+ F7 w8 O
South Alabama Medical Center, Mobile, Alabama.
8 E8 l' ]1 `' ~1 d, ?8 \Address correspondence to: Samar K. Bhowmick, MD, FACE,
8 _3 N7 |' ~6 H% S# R3 gProfessor of Pediatrics, University of South Alabama, College of
J D/ K' Z& ^" G7 C [Medicine, 2451 Fillingim St. Mastin 212, Mobile, AL 36617-2297;+ R+ d5 M, g# }6 Q
e-mail: [email protected].4 L K! @% ?, c9 l
about 6 to 7 months old, which progressively became
]$ B* U% k$ vdarker. She was also concerned about the enlarge-( h+ Y0 M% ]" H3 G5 @
ment of his penis and frequent erections. The child2 }8 Q6 g/ N9 X: _/ k6 T
was the product of a full-term normal delivery, with
' u( Y" o. ]8 ja birth weight of 7 lb 14 oz, and birth length of
. N. [# l9 ^6 G" s20 inches. He was breast-fed throughout the first year
$ z: H5 J x) L: w1 t; H9 A6 \0 sof life and was still receiving breast milk along with. ?5 |) t5 S7 |1 E8 \" h
solid food. He had no hospitalizations or surgery,
8 C# q5 `% Y* o) vand his psychosocial and psychomotor development
$ D$ l+ }9 d/ \2 e& @- A* {was age appropriate.5 ^2 H6 [2 G/ H( @
The family history was remarkable for the father,0 i& h' `! z f y% h+ Y
who was diagnosed with hypothyroidism at age 16,$ j4 _/ o8 V2 q6 z' b$ X% x
which was treated with thyroxine. The father’s, B* I( y6 q3 {( R& P$ L
height was 6 feet, and he went through a somewhat
' ~! E, |! {* p4 U, a# yearly puberty and had stopped growing by age 14.
. C/ K0 v) [$ d" U, vThe father denied taking any other medication. The
6 E% ~8 h. F0 V% Z3 a: bchild’s mother was in good health. Her menarche- N$ z. @$ v" O% a {* ~
was at 11 years of age, and her height was at 5 feet8 l% k/ q0 W# z2 h8 k+ n
5 inches. There was no other family history of pre-6 U! l1 B. C5 q5 w: t% X
cocious sexual development in the first-degree rela-
! J+ \) c/ z" ~# Ktives. There were no siblings.
. ?. v0 R: t8 J' U- \$ z# ~" @Physical Examination; D: r4 L3 Q. Q0 w5 F( I, w* V: N" _# I7 @
The physical examination revealed a very active," J# ?- @8 w8 D5 R
playful, and healthy boy. The vital signs documented8 p& V. j3 N: c
a blood pressure of 85/50 mm Hg, his length was- Q: M4 D; H) L9 D/ I
90 cm (>97th percentile), and his weight was 14.4 kg
: |0 P/ d) l2 g(also >97th percentile). The observed yearly growth
2 J' E: \9 l2 R1 \velocity was 30 cm (12 inches). The examination of
& C; p' X2 k" c! k, D4 { ?( a3 d9 ^the neck revealed no thyroid enlargement.
! i/ H* h* u, t7 lThe genitourinary examination was remarkable for
" c4 @! @# h" g# v Renlargement of the penis, with a stretched length of& D, u+ L& m) t u5 N( }) s W& g, [
8 cm and a width of 2 cm. The glans penis was very well
$ A- p% d+ Q3 J, J( Cdeveloped. The pubic hair was Tanner II, mostly around# K# p! t! w/ M$ C8 o, f
540' w2 |+ g3 o. y/ m5 y- t) E, l/ Y
at University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from3 @1 s5 m! |7 |1 m; o. [% b5 R
the base of the phallus and was dark and curled. The
- {7 h5 T+ A* v$ A0 `9 P7 Wtesticular volume was prepubertal at 2 mL each.
) Q0 a/ F7 u: i2 bThe skin was moist and smooth and somewhat
* e4 L' Q) C7 U8 Soily. No axillary hair was noted. There were no
8 B! \0 S' L( R( D; w( G8 M" b0 cabnormal skin pigmentations or café-au-lait spots.8 O$ ~) D" e" _/ N* Z1 ]: |* W
Neurologic evaluation showed deep tendon reflex 2+ g" t" \4 ` ]/ O$ d3 \
bilateral and symmetrical. There was no suggestion' e# {" @2 [& l% [2 _6 l" E
of papilledema.
T6 N+ r6 l) {: d9 i% l4 }Laboratory Evaluation
6 T; F+ M9 I% Q& i8 z0 DThe bone age was consistent with 28 months by5 S8 r& r: W! I$ D
using the standard of Greulich and Pyle at a chrono-
6 T; o" c1 n" N( V1 Hlogic age of 16 months (advanced).5 Chromosomal# d* @$ j8 T: t' F
karyotype was 46XY. The thyroid function test
! b/ L. X' L, a9 r Pshowed a free T4 of 1.69 ng/dL, and thyroid stimu-
: z7 z, ~' W" ylating hormone level was 1.3 µIU/mL (both normal).1 }& ` Y4 O. d% |1 Y- p' B. }1 }
The concentrations of serum electrolytes, blood# e, h' f0 g' O3 V6 f
urea nitrogen, creatinine, and calcium all were
4 L+ _* H+ b" `0 w q5 x- Awithin normal range for his age. The concentration
* N- m# t/ E; Oof serum 17-hydroxyprogesterone was 16 ng/dL; W) X8 l0 @8 M) X% b5 O" P
(normal, 3 to 90 ng/dL), androstenedione was 203 P c& |/ g$ u5 E
ng/dL (normal, 18 to 80 ng/dL), dehydroepiandros-' q! P% [9 g8 G' {; `# L* b
terone was 38 ng/dL (normal, 50 to 760 ng/dL),
, ]- c$ ^8 V2 Y; H: zdesoxycorticosterone was 4.3 ng/dL (normal, 7 to
* e2 S. w8 u! q A3 h& q49ng/dL), 11-desoxycortisol (specific compound S)
* @4 X# {/ b; T+ `: }' uwas 43 ng/dL (normal, 10 to 156 ng/dL), serum cor-
* \6 H x/ u! {tisol was 7.6 µg/dL (normal, 2.8 to 23 µg/dL), total
: P/ V: A- E6 w- g3 i% b Ftestosterone was 60 ng/dL (normal <3 to 10 ng/dL),; P5 A6 l! ?0 v2 N
and β-human chorionic gonadotropin was less than' V7 {. k9 J! ^/ g S
5 mIU/mL (normal <5 mIU/mL). Serum follicular3 T2 x1 y' D2 Q
stimulating hormone and leuteinizing hormone
# j6 K& w9 ~- k3 X- b# k. N6 Tconcentrations were less than 0.05 mIU/mL; K7 @9 ^8 g4 c* ~6 Z
(prepubertal).9 x' k' {9 G% [. ^$ S7 L/ {5 d/ v# I
The parents were notified about the laboratory1 ^% R8 t$ ~' I+ f( _0 H
results and were informed that all of the tests were
2 h- M; ?6 w0 u( h8 K$ L9 Z0 Snormal except the testosterone level was high. The; I* q% @$ C; [! a/ L. ?) x
follow-up visit was arranged within a few weeks to" Z1 [5 W: [0 x- n2 i4 h& z8 b0 I3 g
obtain testicular and abdominal sonograms; how-
4 X2 B. _7 F6 F# Sever, the family did not return for 4 months. O5 U& m V5 Z# t
Physical examination at this time revealed that the. ^0 t& {3 X. _% y+ y i. n' Q
child had grown 2.5 cm in 4 months and had gained
/ b+ R; V0 S8 v/ U; A2 kg of weight. Physical examination remained" P$ G# _" E) F# O( A/ c, R9 b
unchanged. Surprisingly, the pubic hair almost com-
! A8 \/ s1 R) Zpletely disappeared except for a few vellous hairs at
; ]/ D. l, _7 @$ Tthe base of the phallus. Testicular volume was still 2* P9 U) q6 F! l9 G, M
mL, and the size of the penis remained unchanged.
* r. K9 H0 c2 ~ wThe mother also said that the boy was no longer hav-) z. a( c6 ~. e7 U
ing frequent erections.
; G4 M( n2 ?" s3 M1 EBoth parents were again questioned about use of8 d6 c$ \( R" x' y
any ointment/creams that they may have applied to$ p/ b6 c. u0 d- B
the child’s skin. This time the father admitted the4 p; ?7 r( o6 B5 g1 ?7 g
Topical Testosterone Exposure / Bhowmick et al 5417 L4 t+ c: t) ?" p2 R9 d
use of testosterone gel twice daily that he was apply-
X- i( D( c$ A$ ~ ning over his own shoulders, chest, and back area for# c1 M' z1 ^ J) m: n: R
a year. The father also revealed he was embarrassed% X4 Q2 p P* _' A% L1 P3 `2 A
to disclose that he was using a testosterone gel pre-% Q3 f+ Q" f( J/ @' ~* f f' N
scribed by his family physician for decreased libido% e3 ]1 p( B% |
secondary to depression.
0 f! W9 b/ k' q/ wThe child slept in the same bed with parents.
! g3 Q& t, |( ]! d: r9 K7 F+ GThe father would hug the baby and hold him on his
, Z) n: f* H( d9 X' ~chest for a considerable period of time, causing sig-
. u8 p; B8 w9 l+ {$ `7 q6 M: [nificant bare skin contact between baby and father.1 F# j6 P/ H+ r- {' }
The father also admitted that after the phone call,0 ?+ }3 X3 @+ v5 R& @
when he learned the testosterone level in the baby" s% q) p, Z- M+ A
was high, he then read the product information
, |, s4 h s% [0 R/ W$ n, ?packet and concluded that it was most likely the rea-9 P7 z5 O+ |* Z: a
son for the child’s virilization. At that time, they
" W7 v* N! _$ C0 Q& gdecided to put the baby in a separate bed, and the
. w X. z8 B: ^father was not hugging him with bare skin and had# B! b- u6 Q+ I9 y2 a/ i
been using protective clothing. A repeat testosterone
: L5 A- f$ {, L, \9 utest was ordered, but the family did not go to the
9 F3 v1 } f( l4 ulaboratory to obtain the test.
4 p3 U; _& C5 R* H7 _1 [% E$ _+ C9 ~9 GDiscussion. p& }" X! j! F7 R( x" ~
Precocious puberty in boys is defined as secondary" F7 r( Q u: X( Q: F
sexual development before 9 years of age.1,49 y, T" E4 [7 F0 k4 A `- a
Precocious puberty is termed as central (true) when8 e3 N$ v, O$ K
it is caused by the premature activation of hypo-
- r( d: _ y' Z; B; a4 Xthalamic pituitary gonadal axis. CPP is more com-
( i3 g$ r" i: u, z: Q( cmon in girls than in boys.1,3 Most boys with CPP m9 \$ y$ n4 f. S; w2 d/ D K' I
may have a central nervous system lesion that is
7 J S; ^8 L U! jresponsible for the early activation of the hypothal-
1 O' D1 o' Y4 t# wamic pituitary gonadal axis.1-3 Thus, greater empha-
- Z$ \: y2 s& x8 \/ Z/ @sis has been given to neuroradiologic imaging in
) R3 u* X7 F5 F" o# t" ~+ `boys with precocious puberty. In addition to viril-
* C) L0 Y- K3 fization, the clinical hallmark of CPP is the symmet-6 X& ]) N" x7 {5 R
rical testicular growth secondary to stimulation by
6 c% |* s1 [ d5 y+ rgonadotropins.1,3- C2 x# o t1 ^
Gonadotropin-independent peripheral preco-
* j! w8 i! e: \4 l) k9 O- Kcious puberty in boys also results from inappropriate
+ }8 h" z, l. u! I- ?+ P0 Mandrogenic stimulation from either endogenous or
% t8 Q( V5 z! uexogenous sources, nonpituitary gonadotropin stim-
6 ~9 T' m* m) Q' vulation, and rare activating mutations.3 Virilizing
) b0 U/ q3 a9 h$ Z" ~congenital adrenal hyperplasia producing excessive$ c8 b5 {/ G6 H7 i% ]
adrenal androgens is a common cause of precocious
5 P W: x5 c& bpuberty in boys.3,4
& I$ X* a( c0 ]! UThe most common form of congenital adrenal
' _ I* j Z% uhyperplasia is the 21-hydroxylase enzyme deficiency." z; [, D" ]4 w% u2 N
The 11-β hydroxylase deficiency may also result in
4 s1 k: u) k; Xexcessive adrenal androgen production, and rarely,
% ~! k) |# ?* f9 ~6 s t7 Ean adrenal tumor may also cause adrenal androgen2 G: ?; l- P9 p& O
excess.1,3( u# V) u! L) t( R6 D: r7 C0 B
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542 Clinical Pediatrics / Vol. 46, No. 6, July 2007. N d, k8 s5 n# Q5 v0 a/ w! E! k
A unique entity of male-limited gonadotropin-, A0 ^2 |* N4 a/ P4 Z/ q
independent precocious puberty, which is also known; b' E; ]/ v6 S+ Y$ U1 K/ i' @
as testotoxicosis, may cause precocious puberty at a
: n! W, x2 r! O! {5 B- Svery young age. The physical findings in these boys7 O) x& z, a) s
with this disorder are full pubertal development,
/ R, k I3 {, p5 ]% uincluding bilateral testicular growth, similar to boys
! |4 ] l8 B2 J: _! s# kwith CPP. The gonadotropin levels in this disorder
: v1 V& Y( X3 h+ ^6 W, H+ Z bare suppressed to prepubertal levels and do not show4 i* e, Y. N N7 w6 E
pubertal response of gonadotropin after gonadotropin-
" }, a. U% c: a' v3 Kreleasing hormone stimulation. This is a sex-linked
* q9 M* k* q' S; i( kautosomal dominant disorder that affects only! ]# ]9 h! [/ P
males; therefore, other male members of the family
% l6 g6 q# @) H4 ^- J F9 e( omay have similar precocious puberty.3
# `0 ~, a# ^; y0 Q& `1 j+ f7 FIn our patient, physical examination was incon-- J: G+ @8 a6 B. q+ b8 W
sistent with true precocious puberty since his testi-( F3 M( s! ~7 c, V
cles were prepubertal in size. However, testotoxicosis5 P& e8 R) l" Z
was in the differential diagnosis because his father& O5 a. E" A3 M8 r
started puberty somewhat early, and occasionally,
3 i+ Z$ B' Z6 |& [testicular enlargement is not that evident in the. v0 A* V2 m7 c# x/ G, _
beginning of this process.1 In the absence of a neg-
7 ]: C8 p+ L2 L P8 ^2 bative initial history of androgen exposure, our; X6 z6 n( d f
biggest concern was virilizing adrenal hyperplasia,
1 G* d" Q* u( q) y6 r/ beither 21-hydroxylase deficiency or 11-β hydroxylase
" r: E6 ^7 s8 C: g) _+ kdeficiency. Those diagnoses were excluded by find-
/ \( [! |3 c' J; i" Ting the normal level of adrenal steroids.
2 [1 T1 X: F! x! tThe diagnosis of exogenous androgens was strongly
3 F) T+ X! M: J* \! i- Bsuspected in a follow-up visit after 4 months because+ N, r7 f o+ e& Z) Y
the physical examination revealed the complete disap-
; M. c( | c( X) A9 k* ^ W+ e5 kpearance of pubic hair, normal growth velocity, and) j$ s: Y" k5 p/ C" I. q; W0 M
decreased erections. The father admitted using a testos-
) G: w c) F+ Q1 s$ t4 S+ { Jterone gel, which he concealed at first visit. He was C& i. o+ i$ {8 s. Q( ?7 m
using it rather frequently, twice a day. The Physicians’
9 z% q4 W3 G$ Q$ qDesk Reference, or package insert of this product, gel or
( ~0 Q/ O5 w N- h+ mcream, cautions about dermal testosterone transfer to
" K1 s3 y; O1 tunprotected females through direct skin exposure.
' Y, U) o9 ?1 M9 z; `& qSerum testosterone level was found to be 2 times the, G( S0 g) C# ?3 k1 h" p: E5 c# M1 Z
baseline value in those females who were exposed to
2 n u2 m8 u/ c9 Neven 15 minutes of direct skin contact with their male6 Y/ _' h7 t% B, ^. F/ D
partners.6 However, when a shirt covered the applica-
$ I0 m7 f: | J5 Q" otion site, this testosterone transfer was prevented.8 t+ R5 y7 G* j: \# l
Our patient’s testosterone level was 60 ng/mL,' n1 ?5 l1 c* |. s2 c
which was clearly high. Some studies suggest that
7 E9 H1 q2 X3 B( Y& ~dermal conversion of testosterone to dihydrotestos-
# E8 v! E5 Q* f, i" {3 aterone, which is a more potent metabolite, is more, |% P1 T$ B. s- N* ^, Z0 J
active in young children exposed to testosterone
9 v/ i; w* d+ W9 N; m. \4 A3 g! Q) texogenously7; however, we did not measure a dihy-) m0 v, _0 F/ i* e2 R
drotestosterone level in our patient. In addition to
2 H( K! T5 f% w1 Mvirilization, exposure to exogenous testosterone in0 n8 N' c) n. F5 q" \5 t
children results in an increase in growth velocity and
$ S3 z' T1 b7 ]2 Tadvanced bone age, as seen in our patient.6 J3 ~, C) o- S n6 N
The long-term effect of androgen exposure during
: j: h& K& C) r' ?; Pearly childhood on pubertal development and final# u3 |' T2 J3 s) J0 p; w
adult height are not fully known and always remain) w$ O3 \# _8 A6 ` l9 V3 o
a concern. Children treated with short-term testos-
& h7 o V* t! G% L+ ]- }terone injection or topical androgen may exhibit some/ d" i& m( G" X) l
acceleration of the skeletal maturation; however, after# B6 R- _8 T; R2 t9 p
cessation of treatment, the rate of bone maturation
Y {* d( s5 D" P8 n8 x8 I2 j# Pdecelerates and gradually returns to normal.8,99 O$ x, A$ S! X7 |6 J
There are conflicting reports and controversy% O9 e I( ]$ j( S4 u3 X, K" Z# L! L9 R
over the effect of early androgen exposure on adult
5 W% r" \) u& l; Wpenile length.10,11 Some reports suggest subnormal
/ G6 F! s+ p, L1 t/ B$ Ladult penile length, apparently because of downreg-
F$ T# `' o. k3 x5 k+ o$ wulation of androgen receptor number.10,12 However,
" c |9 y) d8 V" u1 I# jSutherland et al13 did not find a correlation between
% D! F* D- N5 R& d1 {0 s' p' F) Gchildhood testosterone exposure and reduced adult
; z4 ~& o( u; ] h7 @penile length in clinical studies.
+ m# B1 P9 s, C2 t& NNonetheless, we do not believe our patient is
6 L6 S h* ^- Kgoing to experience any of the untoward effects from
; I' c# J3 I3 {8 u) ]testosterone exposure as mentioned earlier because
! v; v( `5 e, F- @0 B p3 |3 m% c. Gthe exposure was not for a prolonged period of time.
. i0 _% u |- M; D+ q( S2 y& lAlthough the bone age was advanced at the time of
! u0 d; T# U# W& a; Q' x6 adiagnosis, the child had a normal growth velocity at
, ]$ y+ \+ r; i3 F4 Rthe follow-up visit. It is hoped that his final adult3 ~) N7 I; j+ L4 h0 J
height will not be affected.: U. B) Y6 c8 t) f F
Although rarely reported, the widespread avail-. C+ e2 `+ C9 j
ability of androgen products in our society may8 Q2 O; F- a$ b( a/ C1 [
indeed cause more virilization in male or female
5 W& T* `! U/ U) C7 echildren than one would realize. Exposure to andro-) ?- x" v6 L8 ]0 t8 E$ M
gen products must be considered and specific ques-4 C( i% M( ~, j
tioning about the use of a testosterone product or
5 {1 F# { N9 }; ?( o% i- n! Fgel should be asked of the family members during: J5 C$ ]: o" s
the evaluation of any children who present with vir-% S6 |6 G; `- Y7 y3 d! R
ilization or peripheral precocious puberty. The diag-
2 x0 \: \, d% G0 r7 f3 r: Qnosis can be established by just a few tests and by
3 j# h+ Z9 P8 N P" Uappropriate history. The inability to obtain such a% k# ^; E* e. y3 @6 \7 {
history, or failure to ask the specific questions, may
( P* l* n; `* w. A( z7 @" F. Rresult in extensive, unnecessary, and expensive
$ }! k' u9 Z, c# t' rinvestigation. The primary care physician should be% `$ R. ]* @$ w! q: U: B% o' Z; D
aware of this fact, because most of these children
5 x7 Z2 n7 x; t- g9 d' T. m7 j; kmay initially present in their practice. The Physicians’
" R: q5 k& {4 R; iDesk Reference and package insert should also put a; h' }, L2 f0 G% z0 W
warning about the virilizing effect on a male or* ~8 W7 o* K6 N2 @5 B
female child who might come in contact with some-
, [% m4 `* D2 _: l E. P: ?one using any of these products.+ z, x5 |& U6 ?) s
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Endocrinology. 2nd ed. Philadelphia, PA: WB Saunders;
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2. Rivarola M, Belgorosky A, Mendilaharzu H, et al. Precocious1 V: q3 |, }; N! \# f2 b; l9 M
puberty in children with tumours of the suprasellar pineal
5 V2 Y1 @6 B" d% iat University of Manchester Library on May 25, 2015 cpj.sagepub.com Downloaded from
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$ c ^' @5 z# B( b- t1 Z- m4. Yu YM, Punyasavatsu N, Elder D, D’Ercole AJ. Sexual
( s" m4 d' |. t9 N4 ~# I1 Hdevelopment in a two-year-old boy induced by topical
( ?# w0 S) m8 r7 [4 e5 {exposure to testosterone. Pediatrics. 1999;104:e23.
; o& C9 Y, V* Z9 \5. Greulich WW, Pyle SI, eds. Radiographic Atlas of: z2 R) D: l8 d! P( E/ `
Skeletal Development of the Hand and Wrist. 2nd ed.
+ f, F, ]0 O `/ P6 A$ N5 S9 H3 c0 lStanford, CA: Stanford University Press; 1959.
( E! d; r* {! [6. Physicians’ Desk Reference. Androgel 1% testosterone,
I4 _% W: v/ v# }) y( y* EUnimed Pharmaceutical Inc. Montvale, NJ: Medical
: B. w3 |$ R- _: B7 CEconomics Company, Inc; 2004:3239-3241.; C% z. ^: i; V' B4 k. u' x
7. Klugo RC, Cerny JC. Response of micropenis to topical% O, D9 B: D2 [+ i& {
testosterone and gonadotropin. J Urol. 1978;119:
# d% k g% {- q X9 U667-668.
2 K8 B& a( k6 p! z8. Guthrie RD, Smith DW, Graham CB. Testosterone
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