It was suggested that the nulliparous women used to prefer the drug abortion as the method for terminating the pregnancy. 由此看来，年轻的未产妇更愿意选择药物流产方式终止妊娠，其主要原因为对手术痛苦的畏惧。
A clinical study of strengthened medical abortion assisted with methotrexate and testosterone propionate. 甲氨蝶呤和丙酸睾丸酮辅助加强药物流产的临床观察。
