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Rev Gastroenterol Mex
; 53(2): 103-9, 1988.
Article
in Spanish
| MEDLINE
| ID: mdl-3212330
2.
Rev. méd. Hosp. Gen. Méx
; 44(7): 255-62, 1981.
Article
in Spanish
| LILACS
| ID: lil-12034