1. Department of Cardiology, Hero DMC Heart Institute, Dayanand Medical College & Hospital, Tagore Nagar, Ludhiana, Punjab 141001, India
2. Department of Neurology, Post Graduate Institute of Medical Education and Research (PGIMER), Chandigarh, Punjab 160012, India
3. Department of Cardiac Anaesthesia, Dayanand Medical College & Hospital, Ludhiana, Punjab 141001, India