Second-hand Smoke, Cotinine Levels, and Risk of Circulatory Mortality in a Large Cohort Study of Never-smokers

Gallo V, Neasham D, Airoldi L, Ferrari P, Jenab M, Boffetta P, Overvad K, Tjønneland A, Clavel-chapelon F, Boeing H, Pala V, Palli D, Panico S, Tumino R, Arriola L, Lund E, Bueno-de-mesquita B, Peeters PH, Melander O, Hallmans G, Riboli E, Saracci R, Vineis P. Second-hand Smoke, Cotinine Levels, and Risk of Circulatory Mortality in a Large Cohort Study of Never-smokers. Epidemiology. 2010; 21(2): 207–14.