1.
Pediatría (Bogotá)
; 33(4): 241-6, nov. 1998. tab
Article
in Spanish
| LILACS
| ID: lil-236951
2.
Pediatría (Bogotá)
; 33(3): 152-9, sept. 1998.
Article
in Spanish
| LILACS
| ID: lil-236961