Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) R Gosselink,Breathing techniques in patients with chronic obstructive pulmonary disease (COPD),Chronic Respiratory Disease,1479-9731,SAGE Publications,2004-07,1,3,163-172,https://cir.nii.ac.jp/crid/1362262944990604672,https://doi.org/10.1191/1479972304cd020rs