1.
Bol. epidemiol. Antioq
;
7(3): 77-9, jul.-sept. 1982. tab
Article
in Spanish
| LILACS
| ID: lil-71738
2.
Bol. epidemiol. Antioq
;
7(2): 34-6, abr.-jun. 1982. tab
Article
in Spanish
| LILACS
| ID: lil-71755