1 Department of Cardiology, Aster Malabar Institute of Medical Sciences (MIMS) Hospital, Kannur, Kerala, India. Electronic address: writetovijayan@gmail.com.
2 Department of Cardiology, Anu Institute of Neuro and Cardiac Sciences, Vijayawada, Andhra Pradesh, India.
3 Department of Radiology, Government Medical College, Thiruvananthapuram, Kerala, India.