1.
Washington, D.C; Organización Panamericana de la Salud; jul. 1996. 9 p. (CAIS/96.07).
Monography
in Spanish
| LILACS
| ID: lil-376633
2.
Washington, D.C; Pan Américan Health Organization; July 1996. 9 p. (PAHO/ACHR/96.07).
Monography
in English
| LILACS
| ID: lil-376934