Litvak A S, Morris J A, McRoberts J W
J Urol. 1976 Jun;115(6):736-7. doi: 10.1016/s0022-5347(17)59355-6.
Statistically valid sizes have been obtained for the normal male urethral meatus in children from 6 weeks through 12 years old. It is hoped that these values will allow the diagnosis of meatal stenosis to be made on an objective rather than a clinical basis and that such evaluation will allow for a more rational approach to the therapy of meatal stenosis in boys.
