“…Research by respiratory function scientists confirmed that diffusing capacity abnormality is most abundant in patients with severe COVID-19 [22]. Respiratory physiotherapists provided evidence on symptoms of long-COVID, i.e., the manifestation of several physical and psychological abnormalities 3-6 months after infection [23,24], and several research groups showed that pulmonary rehabilitation improves functional and psychological status in patients with post-acute COVID-19 [25][26][27]. Respiratory nursing research provided qualitative evidence on the fear of being infected among patients with COPD leading to self-isolation and accompanying problems [28], and formulated international consensus that awake prone positioning is an attractive, simple and safe way to improve oxygenation in hypoxaemic patients with COVID-19 [29].…”