Serum levels of insulin-like growth factor (IGF)-binding protein-3 (IGFBP-3) in healthy infants, children, and adolescents: the relation to IGF-I, IGF-II, IGFBP-1, IGFBP-2, age, sex, body mass index, and pubertal maturation - Juul, A; Dalgaard, P; Blum, W F; Bang, P; Hall, K; Michaelsen, K F; Muller, J; Skakkebæk, N E (J Clin Endocrinol Metab, 1995)