Reference data for testicular volume measured with ultrasound and pubic hair in Norwegian boys are comparable with Northern European populations

Aim To estimate references for testicular volume measured with ultrasound and Tanner stages of pubic hair in Norwegian boys, and to compare the timing of puberty with data from similar populations. Methods Testicular volume was derived from ultrasound measurements of testicular volume in a cross‐sectional study of 514 healthy boys. A continuous testicular volume for age reference curve was estimated with the LMS method. Tanner stages for pubic...