1. Division of Pulmonary Medicine; Ishikawa-ken Saiseikai Kanazawa Hospital; Kanazawa; Japan
2. Respiratory Medicine; National Hospital Organization Nanao Hospital; Nanao; Japan
3. Division of Respiratory Medicine and Clinical Allergy; Fujita Health University; Toyoake; Japan
4. Laboratory of Space and Environmental Medicine; Graduate School of Medicine and Graduate School of Medical Technology; Teikyo University; Itabashi-ku; Tokyo; Japan