Active and involuntary tobacco smoking and upper aerodigestive tract cancer risks in a multicenter case-control study

Lee YC, Marron M, Benhamou S, Bouchardy C, Ahrens W, Pohlabeln H, Lagiou P, Trichopoulos D, Agudo A, Castellsague X, Bencko V, Holcatova I, Kjaerheim K, Merletti F, Richiardi L, Macfarlane GJ, Macfarlane TV, Talamini R, Barzan L, Canova C, Simonato L, Conway DI, McKinney PA, Lowry RJ, Sneddon L, Znaor A, Healy CM, McCartan BE, Brennan P, Hashibe M