1.
Gastroenterol. latinoam
;
12(4): 243-312, nov. 2001. tab
Article
in Spanish
| LILACS
| ID: lil-310263
2.
Gastroenterol. latinoam
;
11(4): 347-403, nov. 2000. tab
Article
in Spanish
| LILACS
| ID: lil-277261
3.
Gastroenterol. latinoam
;
10(4): 274-348, nov. 1999. tab, graf
Article
in Spanish
| LILACS
| ID: lil-362768