Fasting plasma ghrelin levels are negatively correlated with insulin resistance and PAI-1, but not with leptin, in obese children and adolescents. - Ikezaki,A.; Hosoda,H.; Ito,K.; Iwama,S.; Miura,N.; Matsuoka,H.; Kondo,C.; Kojima,M.; Kangawa,K.; Sugihara,S. (Diabetes, 2002)