1.
Aten Primaria
; 31(2): 114-9, 2003 Feb 15.
Article
in Spanish
| MEDLINE
| ID: mdl-12609110
2.
Aten Primaria
; 29(3): 178-88, 2002 Feb 28.
Article
in Spanish
| MEDLINE
| ID: mdl-11879606