October 2012,
The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians,
Anni Larnkjær, and
Mads Vendelbo Lind, and
Benedikte Grenov, and
Christian Molgaard, and
Kim F Michaelsen