1.
Aten Primaria
; 7(5): 403, 1990 May.
Article
in Spanish
| MEDLINE
| ID: mdl-2129710
2.
Rev Sanid Hig Publica (Madr)
; 53(9-10): 1407-17, 1979.
Article
in Spanish
| MEDLINE
| ID: mdl-400543