http://reply.papertrans.cn/3/276/27540/27540-11.png
Submitted on: 01 September 2012.
Revised on: 14 October 2012.
Accepted on: 24 October 2012.
SCANDINAVIAN JOURNAL OF WORK ENVIRONMENT & HEALTH
http://reply.papertrans.cn/3/276/27540/27540-13.png
Submitted on: 18 July 1999.
Revised on: 31 July 1999.
Accepted on: 11 August 1999.
SCANDINAVIAN JOURNAL OF WORK ENVIRONMENT & HEALTH
http://reply.papertrans.cn/3/276/27540/27540-15.png
http://reply.papertrans.cn/3/276/27540/27540-16.png
Submitted on: 14 December 2014.
Revised on: 23 January 2015.
Accepted on: 29 January 2015.
SCANDINAVIAN JOURNAL OF WORK ENVIRONMENT & HEALTH
http://reply.papertrans.cn/3/276/27540/27540-18.png
http://reply.papertrans.cn/3/276/27540/27540-19.png
http://reply.papertrans.cn/3/276/27540/27540-20.png