pubmed:abstractText |
Epidemiologic studies have reported that cigarette smoking is inversely associated with Parkinson disease (PD). However, questions remain regarding the effect of age at smoking onset, time since quitting, and race/ethnicity that have not been addressed due to sample size constraints. This comprehensive assessment of the apparent reduced risk of PD associated with smoking may provide important leads for treatment and prevention.
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pubmed:affiliation |
Department of Epidemiology and Environmental Health Sciences, UCLA School of Public Health, 650 Charles Young Smith Dr S, Los Angeles, CA 90095-1772, USA. britz@ucla.edu
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