1.
Washington, D.C; Organización Panamericana de la Salud; 1994. 13 p. (PAHO/HPP/94.25).
Monography
in Spanish
| LILACS
| ID: lil-372686
2.
Washington, D.C; Pan Américan Health Organization; 1994. 12 p. (PAHO/HPP/94.25).
Monography
in English
| LILACS
| ID: lil-373018
3.
Educ. méd. salud
;
27(1): 50-60, 1993.
Article
in Spanish
| LILACS
| ID: lil-371567
4.
Washington, D.C; s.n; feb. 1988. 40 p.
Non-conventional
in Spanish
| LILACS
| ID: lil-367133