1.
Santafé de Bogotá, D.C; OPS; 1998. 77 p.
Monography
in Spanish
| LILACS
| ID: lil-259651
2.
Brasília; Fundaçäo Nacional de Saúde; 2 ed; 1996. 48 p.
Monography
in Portuguese
| LILACS
| ID: lil-191056