%0 Journal Article %T Oral clefts and life style factors — A case-cohort study based on prospective Danish data %A Bille, Camilla %A Olsen, Jorn %A Vach, Werner %A Knudsen, Vibeke %A Olsen, Sjurdur %A Rasmussen, Kirsten %A Murray, Jeffrey %A Andersen, Anne %A Christensen, Kaare %J European Journal of Epidemiology %V 22 %N 3 %P 173-181 %@ 0393-2990 %D 2007-02-13 %I Kluwer Academic Publishers %~ DeepDyve