1.
Rev Sanid Hig Publica (Madr)
; 61(11-12): 1167-78, 1987.
Article
in Spanish
| MEDLINE
| ID: mdl-3454490
2.
Rev Sanid Hig Publica (Madr)
; 60(1-2): 95-103, 1986.
Article
in Spanish
| MEDLINE
| ID: mdl-3749770