Sharath Burugina Nagaraja1, Ritesh G Menezes2, Rony Zachariah3. 1. Department of Community Medicine, Employees State Insurance Corporation Medical College and Post Graduate Institute of Medical Sciences and Research, Bangalore, India. 2. College of Medicine, King Fahd Hospital of the University, University of Dammam, Dammam, Saudi Arabia. 3. Médecins Sans Frontières-Brussels Operational Centre, Luxembourg.