B. Moghimi-Dehkordi, A. Safaee, M. Vahedi, M. A. Pourhoseingholi, A. Pourhoseingholi, and S. Ashtari, “History of upper gastrointestinal cancers in relatives: a community-based estimate”, Gastroenterol Hepatol Bed Bench, vol. 5, no. 2, Mar. 2012.