Emissions of total volatile organic compounds and indoor environment assessment in dental clinics in Athens, Greece - Helmis, C.G.; Tzoutzas, J.; H. A. Flocas; Halios, C.H.; Assimakopoulos, V.D.; Stathopoulou, O.I.; Panis, V.; Apostolatou, M. (International Dental Journal, 2008)