1.
Acta Gastroenterol Latinoam
; 37(4): 209-12, 2007 Dec.
Article
in Spanish
| MEDLINE
| ID: mdl-18254257
2.
Acta gastroenterol. latinoam
; 37(4): 209-212, 2007.
Article
in Spanish
| LILACS
| ID: lil-490736