- Ankur Kalra: Clinical and Research Fellow, Division of Interventional Cardiology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, United States; Division of Cardiology, Department of Medicine, Kalra Hospital SRCNC (Sri Ram Cardio-thoracic and Neurosciences Centre) Pvt. Ltd., New Delhi, India. Electronic address: kalramd.ankur@gmail.com.