Ventilation and air cleaning to limit aerosol particle concentrations in a gym during the COVID-19 pandemic - Blocken, B.; van Druenen, T.; Riccia, A.; Kang, L.; van Hooff, T.; Qin, P.; Xia, L.; Alanis Ruiz, C.; Arts, J. A.; Diepens, J. F. L.; Maas, G. A.; Gillmeier, S. G.; et al. (Building and Environment, 2021)