1Timor-Tritsch IE, Monteagudo A, Mandeville EO, et al. Successful management of viable cervical pregnancy by local injection of methotrexate guided by transvaginal ultrasonography[J]. Am J Obstet Gynecol, 1994,170(3):737-739.
2Chen D, Kligman I, Rosenwaks Z. Heterotopic cervical pregnancy successfully treated with transvaginal ultrasound-guided aspiration and cervical-stay sutures [J]. Fertil Steril, 2001, 75(5):1030-1033.
3Raskin MM. Diagnosis of cervical pregnancy by ultrasound: a case report [J]. Am J Obstet Gynecol. 1978, 130(2):234-235.
4Jozwiak EA, Ulug U, Akman MA, et al. Successful resection of a heterotopic cervical pregnancy resulting from intracytoplasmic sperm injection[J]. Fertil Steril,2003,79(2):428-430.
