1 Department of Cardiology, National Taiwan University Children's Hospital, No. 8, Chung-Shan South Road, Taipei 100, Taiwan.
2 Department of Pediatrics, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, No. 707, Section 3, Chung-Yang Road, Hualien 970, Taiwan.
3 Division of Cardiovascular Surgery, Department of Surgery, National Taiwan University Hospital and National Taiwan University College of Medicine, No.7, Chung Shan South Road, Taipei 100, Taiwan.
4 Department of Pediatrics, Medical College, National Taiwan University, No.1, Section 1, Jen-Ai Road, Taipei 100, Taiwan.