1.
Gac. méd. Méx
;
126(5): 455-62, sept.-oct. 1990. ilus, tab
Article
in Spanish
| LILACS
| ID: lil-175344
2.
Gac. méd. Méx
;
126(1): 25-34, ene.-feb. 1990. tab
Article
in Spanish
| LILACS
| ID: lil-95427