1.
Biomédica (Bogotá)
;
21(2): 193-199, jun. 2001. tab, graf
Article
in Spanish
| LILACS
| ID: lil-315779
2.
Pediatría (Bogotá)
;
24(1): 22-9, oct.-dic. 1989. tab, graf
Article
in Spanish
| LILACS
| ID: lil-237062