Early impairment of endothelial structure and function in young normal-weight women with polycystic ovary syndrome. - Orio,F.; Palomba,S.; Cascella,T.; De Simone,B.; Di Biase,S.; Russo,T.; Labella,D.; Zullo,F.; Lombardi,G.; Colao,A. (J Clin Endocrinol Metab, 2004)