Freedman, N., Derakhshan, M., Abnet, C., Schatzkin, A., Hollenbeck, A., & McColl, K. (2010). Male predominance of upper gastrointestinal adenocarcinoma cannot be explained by differences in tobacco smoking in men versus women. European Journal of Cancer, 46(13), 2473-2478. https://doi.org/10.1016/j.ejca.2010.05.005

Freedman, N.D, M.H Derakhshan, C.C Abnet, A. Schatzkin, A.R Hollenbeck, and K.E.L McColl. "Male Predominance of Upper Gastrointestinal Adenocarcinoma Cannot Be Explained by Differences in Tobacco Smoking in Men Versus Women." European Journal of Cancer 46, no. 13 (2010): 2473-2478. https://doi.org/10.1016/j.ejca.2010.05.005.

Freedman, N.D, et al. "Male Predominance of Upper Gastrointestinal Adenocarcinoma Cannot Be Explained by Differences in Tobacco Smoking in Men Versus Women." European Journal of Cancer, vol. 46, no. 13, 2010, pp. 2473-2478, https://doi.org/10.1016/j.ejca.2010.05.005.