1.
Rev. Fac. Med. (Bogotá)
; 51(3): 149-157, jul.-sept. 2003. tab, graf
Article
in Spanish
| LILACS
| ID: lil-424520
2.
Rev. Fac. Med. (Bogotá)
; 51(2): 87-93, abr.-jun. 2003. tab, graf
Article
in Spanish
| LILACS
| ID: lil-424529