Insulin sensitivity and secretion in normal children related to size at birth, postnatal growth, and plasma insulin-like growth factor-I levels - Ong, K K; Petry, C J; Emmett, P M; Sandhu, M S; Kiess, W; Hales, C N; Ness, A R; Dunger, D B ALSPAC study team (Diabetologia, 2004)