1. Center for Essential Surgical and Acute Care, Global Health Directorate, Indus Health Network, 5th Floor Woodcraft Building, Plot 3 & 3-A, Sector 47, Korangi Creek Road, Karachi, Pakistan.
2. Department of Surgery, The Aga Khan University Hospital, Karachi, Pakistan.
3. Indus Hospital Research Center, The Indus Hospital, Karachi, Pakistan.
4. School of Public Health, Loma Linda University, Loma Linda, United States of America.
5. Department of Anaesthesiology, The Aga Khan University Hospital, Karachi, Pakistan.