Resilience as a protective factor for well-being and emotional stability in elite-level football players during the first wave of the COVID-19 pandemic - Elholm Madsen, E.; Krustrup, P.; Hvid Larsen, C.; Elbe, A.-M.; Wikman, J. M.; Ivarsson, A.; Lautenbach, F. (Science and Medicine in Football, 2021)