1. Department of Paediatrics and Child Health; Obafemi Awolowo University; Ile-Ife Nigeria
2. Department of Paediatrics (Neonatal Unit); Obafemi Awolowo College of Health Sciences, Olabisi Onabanjo University; Sagamu Nigeria
3. Department of Medical Laboratory Science; Achievers University; Owo Nigeria
4. Institute of Tropical Diseases Research and Prevention; University of Calabar Teaching Hospital (ITDR/P); Calabar Nigeria
5. Department of Paediatrics; University of Uyo Teaching Hospital; Uyo Nigeria
6. The Nordic Cochrane Centre; Righospitalet; Copenhagen UK
7. Division of Neonatal-Perinatal Medicine, Department of Pediatrics; Larner College of Medicine at the University of Vermont; Burlington Vermont USA
8. Department of Paediatrics; University of Calabar Teaching Hospital; Calabar Nigeria