1. Orthopedic Section, Department of Surgery, The Aga Khan University Hospital, Karachi, Pakistan.
2. General Surgery Department, York Hospital, York, PA, USA.
3. General Surgery Department, Yale University, New Haven, CT, USA.
4. Medical College, The Aga Khan University, Karachi, Pakistan.
5. Department of Biological and Biomedical Sciences, The Aga Khan University Hospital, Karachi, Pakistan.
6. Pioneer Public Health Consultants (PPHCUSA), Houston, TX, USA