1.
Washington, D.C; Organización Panamericana de la Salud; 1998. 17 p. tab.
Monography
in Spanish
| LILACS
| ID: lil-378778
2.
Washington, D.C; Pan Américan Health Organization; 1998. 15 p. tab.
Monography
in English
| LILACS
| ID: lil-379098