1 Respiratory Center, Matsusaka Municipal Hospital, Matsusaka, Mie Prefecture, Japan.
2 Department of Pulmonary and Critical Care Medicine, Faculty and Graduate School of Medicine, Mie University, Tsu, Mie Prefecture, Japan.
3 Department of Immunology, Faculty and Graduate School of Medicine, Mie University, Tsu, Mie Prefecture, Japan.
4 Department of Immunology, Faculty and Graduate School of Medicine, Mie University, Tsu, Mie Prefecture, Japan. Electronic address: gabazza@doc.medic.mie-u.ac.jp.