Cushing’s syndrome in a patient with bilateral macronodular hyperplasia responding to cisapride: an in vivo and in vitro study. - Mannelli,M.; Ferruzzi,P.; Lucani,P.; Crescioli,C.; Buci,L.; Corona,G.; Serio,M.; Peri,A. (J Clin Endocrinol Metab, 2003)