Gola, M., L. Gaviraghi, L. M. Capasso, A. Cuda, D. D'Alessandro, C. Bertolini, S. Riboli, and S. Capolongo. “Design and Hygiene Issues in Sports Facilities. A Pilot Study Which Investigates Fitness Centres by Using a Multidisciplinary Tool”. Annali dell’Istituto Superiore Di Sanità, vol. 55, no. 3, Sept. 2019, pp. 224-32, https://annali.iss.it/index.php/anna/article/view/786.