1.
Salud Publica Mex
; 51 Suppl 4: S492-3, 2009.
Article
in English
| MEDLINE
| ID: mdl-20464224
2.
Salud pública Méx
; 51(supl.4): S492-S493, 2009.
Article
in English
| LILACS
| ID: lil-556058