- Respiratory symptom reporting error in occupational surveillance of older farmersNancy E Johnson
College of Medicine, University of Kentucky, Lexington, KY 40536, USA
J Occup Environ Med 51:472-9. 2009..Agricultural health studies often use respiratory symptom report as a surrogate measure of disease and exposure; little data exists on the accuracy of symptom report in a work-motivated population...
- Concentrations of arsenic, chromium, and nickel in toenail samples from Appalachian Kentucky residentsNancy Johnson
College of Public Health, University of Kentucky, USA
J Environ Pathol Toxicol Oncol 30:213-23. 2011..Environmental factors may contribute to the increased concentration of trace elements measured in residents of the Appalachian region. Routes of human exposure need to be determined...