Department of Cardiology, St Bartholomew's Hospital Barts NHS Trust, London, United Kingdom; Department of Cardiology, Alexandria University Hospital, Alexandria, Egypt; Address for correspondence: Dr. Basma Hammad, St Bartholomew's Hospital Barts NHS Trust, W Smithfield, London EC1A 7BE, United Kingdom.
Pushpa Shivaram, MD
Division of Paediatric Cardiology, Augusta University, Augusta, Georgia, USA