article 1992 The impact of long-term gonadotropin-releasing hormone analogue treatment on preclinical abortions in patients with severe endometriosis undergoing in vitro fertilization-embryo transfer Fertility and Sterility ·doi:10.1016/s0015-0282(16)54906-1
article 1991 Transvaginal ultrasonic needle-guided aspiration of endometriotic cysts before ovulation induction for in vitro fertilization Journal of in vitro fertilization and embryo transfer : IVF ·doi:10.1007/bf01139786