Assessing biological maturity: chronological age and the pubertal development scale predict free testosterone in adolescent males - Hibberd, E. E.; Hackney, A. C.; Lane, A. R.; Myers, J. B. (Journal of Pediatric Endocrinology and Metabolism, 2014)
Keywords: age; biological age; investigation method; test; child; male; Germany; biological and medical sciences; junior sports