Obstetric and perinatal outcomes in singleton pregnancies resulting from the transfer of frozen thawed versus fresh embryos generated through in vitro fertilization treatment: a systematic review and meta-analysis - Maheshwari, A; Pandey, S; Shetty, A (Fertil Steril, 2012)
e1-9. doi: 10.1016 / j.fertnstert.2012.05.019