Submitted on: 25 September 2011.
Revised on: 29 October 2011.
Accepted on: 08 December 2011.
___________________Journal of Transport & Health---ELSEVIER SCI LTD
http://reply.papertrans.cn/2/200/19970/19970-22.png
http://reply.papertrans.cn/2/200/19970/19970-23.png
Submitted on: 23 July 2017.
Revised on: 26 October 2017.
Accepted on: 16 November 2017.
___________________Journal of Transport & Health---ELSEVIER SCI LTD
Submitted on: 26 August 2001.
Revised on: 05 November 2001.
Accepted on: 31 December 2001.
___________________Journal of Transport & Health---ELSEVIER SCI LTD
http://reply.papertrans.cn/2/200/19970/19970-26.png
http://reply.papertrans.cn/2/200/19970/19970-27.png
Submitted on: 25 July 2016.
Revised on: 17 November 2016.
Accepted on: 29 December 2016.
___________________Journal of Transport & Health---ELSEVIER SCI LTD
Submitted on: 30 April 2015.
Revised on: 20 June 2015.
Accepted on: 08 August 2015.
___________________Journal of Transport & Health---ELSEVIER SCI LTD
Submitted on: 16 December 2004.
Revised on: 07 March 2005.
Accepted on: 11 April 2005.
___________________Journal of Transport & Health---ELSEVIER SCI LTD