Association of a variant in the CHRNA5-A3-B4 gene cluster region to heavy smoking in the Italian population

Sorice, R; Bione, S; Sansanelli, S; Ulivi, S; Athanasakis, E; Lanzara, C; Nutile, T; Sala, C; Camaschella, Clara; D'Adamo, P; Gasparini, P; Ciullo, M; Toniolo, D.