1.
Rev. colomb. gastroenterol
;
17(1): 43-46, mar. 2002. tab
Article
in Spanish
| LILACS
| ID: lil-346426
2.
BOGOTA; s.n; abr; oct. 1997. 50 p. tab, graf.
Non-conventional
in Spanish
| LILACS
| ID: lil-237796