title: Primary peritoneal pregnancy on the anterior surface of the uterus.
mesh_terms: D000328:Adult; D003277:Contraceptives, Oral, Combined / Q000009:adverse effects; D005260:Female; D006801:Humans; D010537:Peritoneum; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000209:etiology
chemical_list: D003277:Contraceptives, Oral, Combined