Uday Yanamandra1, Prafull Sharma2, Ananthakrishnan Ramamoorthy3, Vasu Vardhan2. 1. Department of Internal Medicine, Armed Forces Medical College, Pune, Maharashtra, India Department of Internal Medicine, Postgraduate Institute of Medical Education and Research, Chandigarh, India. 2. Department of Internal Medicine, Armed Forces Medical College, Pune, Maharashtra, India. 3. Department of Internal Medicine, INHS Ashwini, Mumbai, Maharashtra, India.