Submitted on: 15 January 2000.
Revised on: 23 April 2000.
Accepted on: 20 May 2000.
___________________ENVIRONMENTAL HEALTH PERSPECTIVES
http://reply.papertrans.cn/1/87/8645/8645-12.png
http://reply.papertrans.cn/1/87/8645/8645-13.png
Submitted on: 24 July 2004.
Revised on: 14 September 2004.
Accepted on: 01 October 2004.
___________________ENVIRONMENTAL HEALTH PERSPECTIVES
Submitted on: 25 March 1998.
Revised on: 05 July 1998.
Accepted on: 22 July 1998.
___________________ENVIRONMENTAL HEALTH PERSPECTIVES
Submitted on: 18 November 2018.
Revised on: 13 January 2019.
Accepted on: 10 March 2019.
___________________ENVIRONMENTAL HEALTH PERSPECTIVES
Submitted on: 04 September 2012.
Revised on: 15 October 2012.
Accepted on: 04 December 2012.
___________________ENVIRONMENTAL HEALTH PERSPECTIVES
http://reply.papertrans.cn/1/87/8645/8645-18.png
http://reply.papertrans.cn/1/87/8645/8645-19.png
Submitted on: 27 November 2000.
Revised on: 04 March 2001.
Accepted on: 28 April 2001.
___________________ENVIRONMENTAL HEALTH PERSPECTIVES