Leptin concentrations during oral glucose tolerance test (OGTT) in obese and normal weight women. - Bougoulia,M.; Tzotzas,T.; Efthymiou,H.; Koliakos,G.; Konstantinidis,T.; Triantos,A.; Krassas,G.E. (Int J Obes Relat Metab Disord, 1999)