Del 299 al 436
| Format: | Article |
|---|---|
| Language: | Spanish |
| Published: |
Editorial Ciencias Médicas
|
| Series: | Revista Cubana de Higiene y Epidemiología |
| Online Access: | http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1561-30031998000100004&lng=en&tlng=en |