Circulating resistin levels are not associated with obesity or insulin resistance in humans and are not regulated by fasting or leptin administration: Cross-sectional and interventional studies in normal, insulin resistant and diabetic subjects. - Lee,J.H.; Chan,J.L.; Yiannakouris,N.; Kontogianni,M.; Estrada,E.; Seip,R.; Orlova,C.; Mantzoros,C.S. (J Clin Endocrinol Metab, 2003)