[1] Hudson Inst Med Res, Ritchie Ctr, Melbourne, Vic, Australia
[2] Monash Univ, Dept Obstet & Gynaecol, Melbourne, Vic, Australia
[3] Royal Womens Hosp, Newborn Res Ctr, Melbourne, Vic, Australia
[4] Murdoch Childrens Res Inst, Ctr Res Excellence Newborn Med, Melbourne, Vic, Australia
[5] Univ Melbourne, Dept Obstet & Gynaecol, Melbourne, Vic, Australia
[6] Royal Childrens Hosp, PIPER Neonatal Retrieval Serv Victoria, Melbourne, Vic, Australia
[7] Univ Hosp Leuven, Div Woman & Child, Dept Obstet & Gynaecol, Leuven, Belgium
[8] Katholieke Univ Leuven, Cluster Woman & Child, Fac Med, Dept Dev & Regenerat, Leuven, Belgium
[9] Univ Coll London Hosp, Inst Womens Hlth, London, England
[10] Monash Hlth, Monash Womens Serv, Melbourne, Vic, Australia