Submitted on: 28 May 2000.
Revised on: 18 June 2000.
Accepted on: 29 June 2000.
Nature Communications
http://reply.papertrans.cn/3/228/22707/22707-32.png
http://reply.papertrans.cn/3/228/22707/22707-33.png
Submitted on: 29 March 2007.
Revised on: 17 April 2007.
Accepted on: 29 April 2007.
Nature Communications
http://reply.papertrans.cn/3/228/22707/22707-35.png
Submitted on: 10 May 2002.
Revised on: 28 May 2002.
Accepted on: 03 June 2002.
Nature Communications