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Chinese version of the severe respiratory insufficiency questionnaire for patients with COPD receiving long-term oxygen therapy. https://t.co/izviRy01oj https://t.co/QDEAVEcvBy
Chinese version of the severe respiratory insufficiency questionnaire for patients with COPD receiving long-term oxygen therapy. https://t.co/izviRy01oj https://t.co/QDEAVEcvBy