Affiliations:
  1. Department of Gastroenterology, Hamad Medical Corporation HMC, Doha Qatar.
  2. Executive and Continuing Professional Education, Harvard TH Chan School of Public Health.
  3. Department of Palliative Medicine National Center for Cancer Care and Research (NCCCR) Doha Qatar.
  4. Department of Laboratory medicine and Pathology, Hamad General Hospital, Doha Qatar.