Published on in Vol 23, No 9 (2021): September
![Severe Fatigue in Long COVID: Web-Based Quantitative Follow-up Study in Members of Online Long COVID Support Groups Severe Fatigue in Long COVID: Web-Based Quantitative Follow-up Study in Members of Online Long COVID Support Groups](https://asset.jmir.pub/assets/2b7c530deb1777e1d6f12b2b1b68f055.png 480w,https://asset.jmir.pub/assets/2b7c530deb1777e1d6f12b2b1b68f055.png 960w,https://asset.jmir.pub/assets/2b7c530deb1777e1d6f12b2b1b68f055.png 1920w,https://asset.jmir.pub/assets/2b7c530deb1777e1d6f12b2b1b68f055.png 2500w)
1 REVAL Rehabilitation Research Center, BIOMED Research Institute, Faculty of Rehabilitation Sciences, Hasselt University, Diepenbeek, Belgium
2 Department of Research and Development, Ciro, Horn, Netherlands
3 Nutrim School of Nutrition and Translational Research in Metabolism, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, Netherlands
4 Department of Respiratory Medicine, Maastricht University Medical Centre, Maastricht, Netherlands
5 Lung Foundation Netherlands, Amersfoort, Netherlands
6 Department of Pulmonary Disease, Radboud University Medical Center, Nijmegen, Netherlands
7 Department of Health Services Research, Care and Public Health Research Institute, Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, Netherlands
*these authors contributed equally