1.
Gastroenterol. latinoam
;
20(2): 91-94, abr.-jun 2009. ilus
Article
in Spanish
| LILACS
| ID: lil-640072
2.
Gastroenterol. latinoam
;
18(2): 172-174, abr.-jun. 2007.
Article
in Spanish
| LILACS
| ID: lil-474635