Citation: Gh. Martinez et al., VAGINAL BLEEDING PATTERNS IN USERS OF PERLUTAL(R), A ONCE-A-MONTH INJECTABLE CONTRACEPTIVE CONSISTING OF 10 MG ESTRADIOL ENANTHATE COMBINEDWITH 150 MG DIHYDROXYPROGESTERONE ACETOPHENIDE - A TRIAL OF 5462 WOMAN-MONTHS, Contraception, 58(1), 1998, pp. 21-27