1. Cardiology Division, Department of Pediatrics and Child Health, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
2. Cardiothoracic Division, Department of Surgery, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
3. Cardiology Division, Department of Internal Medicine, School of Medicine, Addis Ababa University, Addis Ababa, Ethiopia
4. Children’s Heart Fund Cardiac Center, Addis Ababa, Ethiopia