1.
Rev. Col. Méd. Guatem
;
33(2): 4-8, 1982.
Article
in Spanish
| LILACS
| ID: lil-13696
2.
Rev. Col. Méd. Guatem
;
32(2): 14-6, 1981.
Article
in Spanish
| LILACS
| ID: lil-11427
3.
Rev. Col. Méd. Guatem
;
32(4): 31-3, 1981.
Article
in Spanish
| LILACS
| ID: lil-11496