1. Department of Orthopaedic Surgery, Liaquat National Hospital and Medical College, Karachi, Pakistan.
2. Department of Orthopaedic Surgery, Patel Hospital, Karachi, Pakistan.
3. Department of Orthopaedic Surgery, Fazaia Medical College, Karachi, Pakistan.
4. Department of Orthopaedic Surgery, Dow University of Health Sciences, Karachi, Pakistan.