1. AHS. Department of Housing and Urban Development, American Housing Survey, Available from:
www.huduser.org/datasets/ahs.html
, accessed March, 2006.
2. Allen G., Sioutas C., Koutrakis P., Reiss R., Lurmann F., and Roberts P. Evaluation of the TEOM method for measurement of ambient particulate mass in urban areas. JAWMA 1997: 47(6): 682–689.
3. AQS TTN. US Environmental Protection Agency, Air Quality System Technology Transfer Network. Available from
http://www.epa.gov/ttn/airs/airsaqs/
, accessed March, 2006.
4. Bateson T., and Schwartz J. Control for seasonal variation time trend in case-crossover studies of acute effects of environmental exposures. Epidemiology 1999: 10(4): 539–544.
5. Bennett W., Zeman K., and Kim C. Variability of fine particle deposition in healthy adults: effect of age gender. Am J Respir Crit Care Med 1996: 153(5): 1641–1647.