Int. J. Environ. Res. Public Health 2011, 8 434 39. Arheart, K.L.; Lee, D.J.; Fleming, L.E.; LeBlanc, W.G.; Dietz, N.A.; McCollister, K.E.; Wilkinson, J.D.; Lewis, J.E.; Clark, J.D.; Davila, E.P.; Bandiera, F.C.; Erard, M.J. Accuracy of self-reported smoking and secondhand smoke exposure in the US workforce: The National Health and Nutrition Examination Surveys. J. Occup. Environ. Med. 2008, 50, 1414-1420. © 2011 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).