Indoor air quality evaluation using mechanical ventilation and portable air purifiers in an academic dentistry clinic during the covid-19 pandemic in greece - Tzoutzas, I.; Maltezou, H.C.; Barmparesos, N; Tasios, P.; Efthymiou, C.; Assimakopoulos, M.N.; Tseroni, M.; Vorou, R.; Tzermpos, F.; Antoniadou, M.; Panis, V.; Madianos, P. (International Journal of Environmental Research and Public Health, 2021)