1. Adar S.D., Gold D.R., Coull B.A., Schwartz J., Stone P.H., and Suh H. Focused exposures to airborne traffic particles and heart rate variability in the elderly. Epidemiology 2007: 18: 95–103.
2. Alm S., Mukala K., Pasanen P., Tiittanen P., Ruuskanen J., Tuomisto J., and Jantunen M.J. Personal NO2 exposures of preschool children in Helsinki. J Exposure Anal Environ Epidemiol 1998: 8: 79–100.
3. Brook J.R., Graham L., Charland J.P., Cheng Y., Fan X., Lu G., Li S.M., Lillyman C., MacDonald P., Caravaggio G., and MacPhee J.A. Investigation of the motor vehicle exhaust contribution to primary fine particle organic carbon in urban air. Atmos Environ 2007: 41: 119–135.
4. Brunekreef B., Janssen N., De Hartog J., Oldenwening M., Meliefste K., Hoek G., Lanki T., Timonen K., Vallius M., Pekkanen J., and Van Grieken R. Personal Indoor and Outdoor Exposures to PM2.5 and its Components for Groups of Cardiovascular Patients in Amsterdam and Helsinki 2005, Health Effects Institute, Boston; Research report no. 127. Available at
http://pubs.healtheffects.org/types.php?type=1
(30 March 2007).
5. Burnett R.T., and Goldberg M.S. Size-fractionated particulate mass and daily mortality in eight Canadian cities. In: Revised Analyses of Time-Series Studies of Air Pollution and Health. Special Report 2003, Health Effects Institute, Boston, pp 85–89 Available at
http://www.healtheffects.org/news.htm
(16 May 2003).