article 1997 Clinical, endocrine, and metabolic effects of two doses of gestrinone in treatment of pelvic endometriosis American Journal of Obstetrics and Gynecology ·doi:10.1016/s0002-9378(97)70504-0
article 1988 Plasma and peritoneal fluid levels of CA 125 in women with endometriosis American Journal of Obstetrics and Gynecology ·doi:10.1016/0002-9378(88)90588-1