Plasma leptin concentrations are associated with bone mineral density and the presence of vertebral fractures in postmenopausal women. - Yamauchi,M.; Sugimoto,T.; Yamaguchi,T.; Nakaoka,D.; Kanzawa,M.; Yano,S.; Ozuru,R.; Sugishita,T.; Chihara,K. (Clin Endocrinol (Oxf), 2001)