1.
Washington, D.C; Organización Panamericana de la Salud; 1997. 5 p. (OPS/CAIS/97.11).
Monography
in Spanish
| LILACS
| ID: lil-377524
2.
Washington, D.C; Pan Américan Health Organization; 1997. 6 p. (PAHO/ACHR/97.11).
Monography
in English
| LILACS
| ID: lil-377852