Publicaciones
| Format: | Article |
|---|---|
| Language: | English |
| Published: |
Pan American Health Organization
|
| Series: | Revista Panamericana de Salud Pública |
| Online Access: | http://www.scielosp.org/scielo.php?script=sci_arttext&pid=S1020-49891998000700021&lng=en&tlng=en |