Source:
Salud publica de Mexico [Salud Publica Mex] 1994 Nov-Dec; Vol. 36 (6), pp. 597-616.Publisher: Instituto Nacional de Salud Pública Country of Publication: Mexico NLM ID: 0404371 Publication Model: Print
Source:
Salud publica de Mexico [Salud Publica Mex] 1992 Jul-Aug; Vol. 34 (4), pp. 369-70.Publisher: Instituto Nacional de Salud Pública Country of Publication: Mexico NLM ID: 0404371 Publication Model: Print