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Rev. colomb. gastroenterol
;
1(3): 110-13, ene.-mar. 1986.
Article
in Spanish
| LILACS
| ID: lil-221584
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Rev. colomb. gastroenterol
;
1(1): 19-22, jul.-sept. 1985. tab
Article
in Spanish
| LILACS
| ID: lil-221595