Anil Kumar Singhi1, Soumya Kanti Mohapatra2, Ejaz Ahmed Bari3. 1. Department of Pediatric Cardiology, Medica Superspecialty Hospital, Kolkata, India. singhianil@gmail.com. 2. Department of Pediatric Cardiology, Medica Superspecialty Hospital, Kolkata, India. 3. Department of Radiodiagnosis, Medica Superspecialty Hospital, Kolkata, India.