[1] Univ Port Harcourt, World Bank Africa, Ctr Excellence Publ Hlth & Toxicol Res, Choba, Nigeria
[2] Univ Boras, Dept Resource Recovery & Bldg Technol, Boras, Sweden
[3] UK Hlth Secur Agcy, Air Qual & Publ Hlth, Radiat Chem & Environm, Chilton, England
[4] Lublin Univ Technol, Fac Environm Engn, Dept Indoor & Outdoor Air Qual, Lublin, Poland
[5] NIST, Gaithersburg, MD USA
[6] CETEC Foray Ltd, London, England
[7] NIOSH, Ctr Dis Control & Prevent, Resp Hlth Div, Morgantown, WV USA
[8] Univ Tulsa, Indoor Air Program, Tulsa, OK 74104 USA
[9] Univ Oulu, Fac Technol, Civil Engn Res Unit, Oulu, Finland