1. Department of Respiratory Medicine; Tohoku University Graduate School of Medicine; 1-1 Seiryo-machi 980-8574 Aoba-ku Sendai Japan
2. Clinical Research; Innovation and Education Center; Tohoku University Hospital; 1-1 Seiryo-machi Aoba-ku Sendai Japan
3. Miyagi University; School of Nursing; 1-1 Gakuen, Taiwa-cho, Kurokawa-gun Miyagi 981-3298 Japan