Smoking as a confounder in case-control studies of occupational bladder cancer in woman

T'Mannetje, A; Kogevinas, M; CHANG CLAUDE, J; Cordier, S; Gonzalez, Ca; Hours, M; Jockel, Kh; BOLM AUDORFF, U; Lynge, E; Porru, Stefano; Donato, Francesco; Ranft, U; Serra, C; Tzonou, A; Vineis, P; Wahrendorf, J; Boffetta, P.