1 Second Division, Department of Internal Medicine, Hamamatsu, Japan. Electronic address: hozumi@hama-med.ac.jp.
2 Department of Respiratory Medicine, Seirei Hamamatsu General Hospital, Hamamatsu, Japan.
3 Department of Respiratory Medicine, Seirei Mikatahara General Hospital, Hamamatsu, Japan.
4 Second Division, Department of Internal Medicine, Hamamatsu, Japan.
5 Second Division, Department of Internal Medicine, Hamamatsu, Japan; Department of Clinical Pharmacology and Therapeutics, Hamamatsu University School of Medicine, Hamamatsu, Japan.