Submitted on: 04 December 2001.
Revised on: 28 March 2002.
Accepted on: 06 May 2002.
___________________GeroScience---SPRINGER
Submitted on: 17 May 2008.
Revised on: 18 June 2008.
Accepted on: 18 July 2008.
___________________GeroScience---SPRINGER
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Submitted on: 01 March 2018.
Revised on: 08 April 2018.
Accepted on: 28 April 2018.
___________________GeroScience---SPRINGER
http://reply.papertrans.cn/2/108/10742/10742-35.png
http://reply.papertrans.cn/2/108/10742/10742-36.png