http://reply.papertrans.cn/3/275/27463/27463-11.png
http://reply.papertrans.cn/3/275/27463/27463-12.png
http://reply.papertrans.cn/3/275/27463/27463-13.png
http://reply.papertrans.cn/3/275/27463/27463-14.png
Submitted on: 12 July 2015.
Revised on: 02 August 2015.
Accepted on: 07 August 2015.
SALUD PUBLICA DE MEXICO
http://reply.papertrans.cn/3/275/27463/27463-16.png
http://reply.papertrans.cn/3/275/27463/27463-17.png
Submitted on: 17 December 1998.
Revised on: 05 January 1999.
Accepted on: 29 January 1999.
SALUD PUBLICA DE MEXICO
http://reply.papertrans.cn/3/275/27463/27463-19.png
Submitted on: 19 January 2019.
Revised on: 31 January 2019.
Accepted on: 16 February 2019.
SALUD PUBLICA DE MEXICO