Return to work and health-related quality of life up to 1 year in patients hospitalized for COVID-19: the CO-FLOW study oleh L. M. Bek, J. C. Berentschot, M. E. Hellemons, S. C. Remerie, J. van Bommel, J. G. J. V. Aerts, G. M. Ribbers, H. J. G. van den Berg-Emons, M. H. Heijenbrok-Kal, on behalf of the CO-FLOW collaboration group