Long-term and low-dose treatment with cabergoline induces macroprolactinoma shrinkage - Colao, A; Di Sarno, A; Landi, M L; Cirillo, S; Sarnacchiaro, F; Facciolli, G; Pivonello, R; Cataldi, M; Merola, B; Annunziato, L; Lombardi, G (J Clin Endocrinol Metab, 1997)