Free and total insulin-like growth factor (IGF-I), IGF binding protein-1 (IGFBP-1), and IGFBP-3 and their relationships to the presence of diabetic retinopathy and glomerular hyperfiltration in insulin-dependent diabetes mellitus. - Janssen,JA.; Jacobs,ML.; Derkx,FH. (J Clin Endocrinol Metab, 1997)