1 Department of Gastroenterology (Ragesh Babu Thandassery, Mamoon Elbedawi, Anil K. John, Saad Rashid Al Kaabi), Hamad Medical Corporation, Doha, Qatar.
2 Department of Medical Oncology (Hind El-Malik), Hamad Medical Corporation, Doha, Qatar.
3 Department of Laboratory Medicine and Pathology (Issam A Al-Bozom), Hamad Medical Corporation, Doha, Qatar.