Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ludger Grote and Walter T. McNicholas and Jan Hedner,Sleep apnoea management in Europe during the COVID-19 pandemic: data from the European Sleep Apnoea Database (ESADA),European Respiratory Journal,0903-1936,European Respiratory Society (ERS),2020-05-04,55,6,2001323,https://cir.nii.ac.jp/crid/1360580240137498112,https://doi.org/10.1183/13993003.01323-2020