3TENG-FIt, CHAOG HC, SH1H SC. Foreskin development before adolescence in 2149 schoolboys, lnt J Urol, 2006,13(7) : 968 -970.
4Z1VKOVIC D, VARGA J, GREBELDINGER S, et al. External genital abnormalities in male schoolchildren: An epidemiological study. Med Pregl, 2004,57 ( 5 - 6 ) :275 - 278.
5SCHOEN EJ, OEHRLI M, CDBY C, et al. The highly protective effect of newborn circumcision against invasive pencile cancer. Pediatrics, 2000,105(3) :E36.
8CONCEPCION JC, FERNANDEZ P(3, ARANEGUI AM, et al. The need of circumcision or prepuce dilation: A study with 1200 boys. Arch Esp Urol, 2008,61 (6) :699 -704.
9CHAO Y, XING L, GUANG HW. Foreskin development in 10421 Chinese boys aged 0 - 18 years. World J Pediatr. 2009,5 (4) :312 - 315.
10HUTSON JM, CLARKE MC. Current management of the undescended testicle. Semin Pediatr Surg, 2007,16 ( 1 ) :64 - 70.
