AFFILIATIONS
1
Port Moresby General Hospital and School of Medicine and Health Sciences, University of Papua New Guinea, Port Moresby, Papua New Guinea. Present address: Kiunga Hospital, North Fly District of Western Province, Papua New Guinea
2
Port Moresby General Hospital and School of Medicine and Health Sciences, University of Papua New Guinea, Port Moresby, Papua New Guinea
3
Port Moresby General Hospital, Port Moresby, Papua New Guinea
4
School of Medicine and Health Sciences, University of Papua New Guinea, Port Moresby, Papua New Guinea; and Centre for International Child Health, Department of Paediatrics, University of Melbourne, The Royal Children's Hospital, Parkville, Vic. 3079, Australia