4Tulandi T, Salen A. Surgical management of eempic pregnancy. Clin Obstet Gyneeol, 1999,42 ( 1 ) : 31.
5del Rosario R, el-Roeiy A. Abdominal pregnancy on a bladder wall following embryo transfer with cryopreseverecl-thawed embryos: a case report. Fertil Steril, 1996,66(5) :839.