1.
Arch Invest Med (Mex)
; 13(2): 69-72 passim, 1982.
Article
in English, Spanish
| MEDLINE
| ID: mdl-7103653
2.
Arch. invest. méd
; 13(2): 69-72, 1982.
Article
in Spanish
| LILACS
| ID: lil-7525
3.
Salud Publica Mex
; 21(2): 127-34, 1979.
Article
in Spanish
| MEDLINE
| ID: mdl-231330