1. Department of Orthopaedics and Traumatology, University of Calabar, Calabar, Cross River State, Nigeria
2. Department of Orthopaedic Surgery, Federal Medical Centre, Lagos, Cross River State, Nigeria
3. Department of Community Medicine, University of Calabar, Calabar, Cross River State, Nigeria
4. Department of Community Medicine, University of Calabar Teaching Hospital, Calabar, Cross River State, Nigeria
5. Department of Public Health and Community Medicine, University of Calabar Teaching Hospital, Calabar, Cross River State, Nigeria,