APA

Corrao G., Tragnone A., Caprilli R., Trallori G., Papi C., Andreoli A., Di Paolo M., Riegler G., Rigo G. P., Ferraù O., Mansi C., Ingrosso M. & Valpiani D. (19981112). Risk of inflammatory bowel disease attributable to smoking, oral contraception and breastfeeding in Italy: a nationwide case-control study. Cooperative Investigators of the Italian Group for the Study of the Colon and the Rectum (GISC). : International journal of epidemiology.

Chicago

Corrao G, Tragnone A, Caprilli R, Trallori G, Papi C, Andreoli A, Di Paolo M, Riegler G, Rigo G P, Ferraù O, Mansi C, Ingrosso M and Valpiani D. 19981112. Risk of inflammatory bowel disease attributable to smoking, oral contraception and breastfeeding in Italy: a nationwide case-control study. Cooperative Investigators of the Italian Group for the Study of the Colon and the Rectum (GISC). : International journal of epidemiology.

Harvard

Corrao G., Tragnone A., Caprilli R., Trallori G., Papi C., Andreoli A., Di Paolo M., Riegler G., Rigo G. P., Ferraù O., Mansi C., Ingrosso M. and Valpiani D. (19981112). Risk of inflammatory bowel disease attributable to smoking, oral contraception and breastfeeding in Italy: a nationwide case-control study. Cooperative Investigators of the Italian Group for the Study of the Colon and the Rectum (GISC). : International journal of epidemiology.

MLA

Corrao G, Tragnone A, Caprilli R, Trallori G, Papi C, Andreoli A, Di Paolo M, Riegler G, Rigo G P, Ferraù O, Mansi C, Ingrosso M and Valpiani D. Risk of inflammatory bowel disease attributable to smoking, oral contraception and breastfeeding in Italy: a nationwide case-control study. Cooperative Investigators of the Italian Group for the Study of the Colon and the Rectum (GISC). : International journal of epidemiology. 19981112.