Revista colombiana de Gastroenterología Print version ISSN 0120-9957On-line version ISSN 2500-7440
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MARTINEZ MARIN, Julián David; HENAO RIVEROS, Sandra Consuelo and REY TOVAR, Mario Humberto.Levels of vitamin B12 in colombian patients with chronic atrophic gastritis. Rev Col Gastroenterol [online]. 2010, vol.25, n.3, pp.261-264.
ISSN 0120-9957.