1.
P. R. health sci. j
;
7(2): 141-3, aug. 1988. ilus
Article
in English
| LILACS
| ID: lil-69690
2.
Prensa méd. argent
;
68(3): 122-4, 1981.
Article
in Spanish
| LILACS
| ID: lil-5838
3.
Prensa méd. argent
;
68(14): 592-4, 1981.
Article
in Spanish
| LILACS
| ID: lil-6118