1. Muzaffar Lateef Gill:
Department of Gastroenterology, Shifa International Hospital, Islamabad, Pakistan
2. Muslim Atiq:
Department of Gastroenterology, Shifa International Hospital, Islamabad, Pakistan
3. Syma Sattar:
Department of Gastroenterology, Shifa International Hospital, Islamabad, Pakistan
4. Nasir Khokhar:
Department of Gastroenterology, Shifa International Hospital, Islamabad, Pakistan