[1] Univ South Australia, Clin & Hlth Sci, Adelaide, SA, Australia
[2] Hudson Inst Med Res, Ritchie Ctr, Melbourne, Vic, Australia
[3] Monash Univ, Dept Obstet & Gynaecol, Melbourne, Vic, Australia
[4] S Eugenio Hosp, Dept Neonatol, Rome, Italy
[5] S Eugenio Hosp, NICU, Rome, Italy
[6] Tufts Med Ctr, Dept Pediat, Div Newborn Med, Boston, MA 02111 USA
[7] Tufts Univ, Sch Med, Boston, MA 02111 USA
[8] Univ Oslo, Inst Clin Med, Div Paediat & Adolescent Med, Oslo, Norway
[9] Univ Botswana, Dept Paediat & Adolescent Hlth, Gaborone, Botswana
[10] Univ Groningen, Univ Med Ctr Groningen, Beatrix Childrens Hosp, Div Neonatol, Groningen, Netherlands
[11] Univ Queensland, Perinatal Res Ctr, Clin Res Ctr, Fac Med, Brisbane, Qld, Australia
[12] RMIT Univ, Sch Hlth & Biomed Sci, Melbourne, Vic, Australia