- Correspondence to Dr Shahab Abid, Professor and Head Section of Gastroenterology, Department of Medicine, Aga Khan University, Stadium Road, PO Box 3500, Karachi 74800, Pakistan;
- Received March 14, 2016
- Revised May 4, 2016
- Accepted May 6, 2016
- First published June 8, 2016.
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