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Sullivan, J., A. Schreuder, C. Trenga, S. Liu, T. Larson, J. Koenig, and J. Kaufman. Association between Short Term Exposure to Fine Particulate Matter and Heart Rate Variability in Older Subjects With and Without Heart Disease. BMJ Group, 2005.

Sullivan, J., et al. Association between Short Term Exposure to Fine Particulate Matter and Heart Rate Variability in Older Subjects With and Without Heart Disease. BMJ Group, 2005.