1 Division of Cardiology, Buddhist Tzu Chi Medical Foundation, New Taipei, Taiwan.
2 Department of Research, Taipei Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei, Taiwan.
3 Division of Cardiology, Tainan Municipal Hospital, Tainan, Taiwan.
4 Division of Cardiology, Buddhist Tzu Chi Medical Foundation, New Taipei, Taiwan; School of Medicine, Tzu Chi University, Hualien, Taiwan.
5 Division of Cardiology, Buddhist Tzu Chi Medical Foundation, New Taipei, Taiwan; School of Post-baccalaureate Chinese Medicine, Tzu Chi University, Hualien, Taiwan. Electronic address: huang304@gmail.com.