1. Department of Cardiology and Vascular Medicine, Faculty of Medicine, Universitas Airlangga - Dr Soetomo General Hospital, Surabaya, Indonesia
2. Department of Cardiology and Vascular Medicine, Dr R. Soetrasno General Hospital, Rembang, Indonesia
3. Pediatric Cardiology Division, Department of Child Health, Faculty of Medicine, Universitas Airlangga - Dr Soetomo General Hospital, Surabaya, Indonesia