1. Paediatric Surgery Unit, Department of Surgery, Aminu Kano Teaching Hospital, Bayero University Kano, Nigeria
2. Orthopaedic Surgery Unit, Department of Surgery, Aminu Kano Teaching Hospital, Bayero University Kano, Nigeria
3. Department of Paediatrics, Aminu Kano Teaching Hospital, Kano., Nigeria
4. International Foundation Against Infectious Diseases in Nigeria (IFAIN), Nigeria
5. Division of Pediatrics Infectious Disease, University of Nebraska Medical Center, Omaha, USA