Y-C Lin1, W-C Chen1, W-C Liao1, T-C Hsia2. 1. From the Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Department of Respiratory Therapy, and Hyperbaric Oxygen Therapy Center, China Medical University and China Medical University Hospital, Taichung 404, Taiwan. 2. From the Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, Department of Respiratory Therapy, and Hyperbaric Oxygen Therapy Center, China Medical University and China Medical University Hospital, Taichung 404, Taiwan D1914@mail.cmuh.org.tw.