Submitted on: 02 October 2006.
Revised on: 27 December 2006.
Accepted on: 22 January 2007.
___________________Acta Paulista de Enfermagem---UNIV FED SAO PAULO, DEPT ENFERMAGEN
http://reply.papertrans.cn/1/5/433/433-32.png
http://reply.papertrans.cn/1/5/433/433-33.png
http://reply.papertrans.cn/1/5/433/433-34.png
http://reply.papertrans.cn/1/5/433/433-35.png
Submitted on: 31 October 2012.
Revised on: 08 January 2013.
Accepted on: 29 January 2013.
___________________Acta Paulista de Enfermagem---UNIV FED SAO PAULO, DEPT ENFERMAGEN