Content validity and psychometric properties of the inFLUenza Patient-Reported Outcome Plus (FLU-PRO Plus © ) instrument in patients with COVID-19.
Tom J H KeeleySacha SatramParima GhafooriCarolina ReyesHelen J BirchKimberly RaymondHeather L GelhornMark KosinskiCory D SaucierApril Mitchell FosterAmanda LopuskiJohn H PowersPublished in: Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation (2023)
ClinicalTrials.Gov: NCT04545060, September 10, 2020; retrospectively registered.