India, July 1 -- With over 50 years of experience, Prof Dr Mohsin Wali is a Padma Shri awardee and one of India's most respected medical cardiologists. He holds the rare distinction of having served as the personal physician to three Presidents of India-R. Venkataraman, Shankar Dayal Sharma and Pranab Mukherjee-and was appointed to the role at the age of just 33. A pioneer in geriatric medicine, he underwent advanced training at the University of Michigan, USA. A former professor of medicine at Dr Ram Manohar Lohia Hospital, he continues to be a leading voice in internal medicine and preventive cardiology.

A. In our times, the doctors used to examine patients by seeing their pulse, blood pressure, using their stethoscope and examining in...