1.
Rev. chil. enferm. respir
;
9(1): 3-4, ene.-mar. 1993.
Article
in Spanish
| LILACS
| ID: lil-194579
2.
Rev. méd. Chile
;
121(3): 321-4, mar. 1993.
Article
in Spanish
| LILACS
| ID: lil-116837