Todorov, V. ., M. . Boycheva, V. . Georgiev, C. . Minkov, M. . Boichev, and R. . Georgieva. “ESOPHAGEAL CARCINOMA AND BLOOD GROUP AFFILIATION: ESOPHAGEAL CARCINOMA AND BLOOD GROUP AFFILIATION”. JOURNAL SCIENTIFIC AND APPLIED RESEARCH, vol. 13, no. 1, Mar. 2023, pp. 46-51, doi:10.46687/jsar.v13i1.238.