Macroprolactinoma shrinkage during cabergoline treatment is greater in naive patients than in patients pretreated with other dopamine agonists: a prospective study in 110 patients - Colao, A; Di Sarno, A; Landi, M L; Scavuzzo, F; Cappabianca, P; Pivonello, R; Volpe, R; Di Salle, F; Cirillo, S; Annunziato, L; Lombardi, G (J Clin Endocrinol Metab, 2000)