1. Department of Neonatology; St. Olavs University Hospital; Trondheim Norway
2. Department of Clinical and Molecular Medicine; Norwegian University of Science and Technology (NTNU); Trondheim Norway
3. Paediatric Department; Neonatal Unit; Lower Umfolozi Regional War Memorial Hospital; Empangeni South Africa
4. National Center for Fetal Medicine; St. Olavs University Hospital; Trondheim Norway
5. Nelson R. Mandela School of Medicine; University of KwaZulu-Natal; Durban South Africa
6. Department of Public Health and Nursing; NTNU; Trondheim Norway