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    • Aspectos ecológicos del cáncer gástrico en Costa Rica 

      Sierra Ramos, Rafaela; Barrantes Mesén, Ramiro (Revista de Biología Tropical 31(1) p.11-18, 1983-07-18)
      An analysis of 1315 cases of gastric cancer from the records of the Ministry of Public Health, San Jose, Costa Rica between 1977 and 1980 showed important geographical differences in the incidence, and especially in ...