Effect of PEP flute self-care versus usual care in early covid-19: non-drug, open label, randomised controlled trial in a Danish community setting.
Annette MollerupMarius HenriksenSofus Christian LarsenAnita Selmer BennetzenMette Kildevæld SimonsenLinette Marie KofodJenny Dahl KnudsenXiaohui Chen NielsenNina WeisBerit Lilienthal HeitmannPublished in: BMJ (Clinical research ed.) (2021)
ClinicalTrials.gov NCT04530435.