Niess, A., Widmann, M., Gaidai, R., Gölz, C., Schubert, I., Castillo, K., Sachs, J., Bizjak, D., Vollrath, S., Wimbauer, F., Vogel, A., Keller, K., Burgstahler, C., Quermann, A., Kerling, A., Schneider, G., Zacher, J., Diebold, K., Grummt, M.,  Reinsberger, C. (2022). COVID-19 in German Competitive Sports: Protocol for a Prospective Multicenter Cohort Study (CoSmo-S). Int J Public Health, 67, 1604414.