An evaluation of the effect of gonadotropin-releasing hormone analogues and medroxyprogesterone acetate on uterine leiomyomata volume by magnetic resonance imaging: a prospective, randomized, double blind, placebo-controlled, crossover trial. - Carr,B.R.; Marshburn,P.B.; Weatherall,P.T. (J Clin Endocrinol Metab, 1993)