1.
Gac. méd. Méx
;
127(5): 445-53, sept.-oct. 1991.
Article
in Spanish
| LILACS
| ID: lil-175416
2.
Gac. méd. Méx
;
125(11/12): 331-40, nov.-dic. 1989.
Article
in Spanish
| LILACS
| ID: lil-95442