1. Department of Obstetrics; Palestine Medical Complex; Ramallah Palestine
2. Intervention Center; Oslo University Hospital, Rikshospitalet; Oslo Norway
3. Faculty of Medicine; University of Oslo; Oslo Norway
4. Inland Norway University and Applied Science; Oslo Norway
5. Institute of Community and Public Health; Birzeit University; Ramallah Palestine
6. Faculty of Pharmacy, Nursing and Health Professions; Birzeit University; Ramallah Palestine
7. Institute of Metabolism and Systems Research; College of Medical and Dental Sciences; University of Birmingham; Birmingham UK
8. Department of Obstetrics; Al Aqsa Martyrs Hospital; Gaza Palestine
9. Department of Obstetrics; Al Shifa Hospital; Gaza Palestine
10. Department of Obstetrics; Oslo University Hospital; Ullevål Oslo Norway