1 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, National Taiwan University Hospital Yunlin Branch, Douliu City, Taiwan (R.O.C.).
2 Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, National Taiwan University Hospital Yunlin Branch, Douliu City, Taiwan (R.O.C.). Electronic address: c8101147@ms16.hinet.net.