[1] Copenhagen Univ Hosp, Dept Neonatol, Copenhagen, Denmark
[2] VIVE, Health, Copenhagen, Denmark
[3] Univ Copenhagen, Fac Hlth Sci, Fac Hlth Sci, Copenhagen, Denmark
[4] Univ Copenhagen, Dept Clin Med, Copenhagen, Denmark
[5] Copenhagen Univ Hosp, Dept Paediat & Adolescent Med, Copenhagen, Denmark
[6] Copenhagen Univ Hosp, Juliane Marie Ctr Children, Women & Reprod Sect 4074, Copenhagen, Denmark
[7] Copenhagen Univ Hosp, Mary Elizabeths Hosp, Rigshosp Children Teens & Expecting Families, Copenhagen, Denmark
[8] Bispebjerg & Frederiksberg Hosp, Ctr Clin Res & Prevent, Frederiksberg, Denmark
[9] Slagelse Hosp, Dept Obstet & Gynaecol, DK-4200 Slagelse, Region Sjaellan, Denmark