Takahiko Horiguchi1, Rieko Kondo2. 1. Department of Respiratory Medicine II, Fujita Health University School of Medicine, Nakagawa-ku, Nagoya, Japan. Electronic address: ta-hori@fujita-hu.ac.jp. 2. Department of Respiratory Medicine II, Fujita Health University School of Medicine, Nakagawa-ku, Nagoya, Japan.