Submitted on: 30 June 2002.
Revised on: 05 September 2002.
Accepted on: 21 October 2002.
___________________Digital Health---SAGE PUBLICATIONS LTD
http://reply.papertrans.cn/1/75/7475/7475-32.png
http://reply.papertrans.cn/1/75/7475/7475-33.png
http://reply.papertrans.cn/1/75/7475/7475-34.png
Submitted on: 30 January 2021.
Revised on: 19 May 2021.
Accepted on: 14 June 2021.
___________________Digital Health---SAGE PUBLICATIONS LTD
http://reply.papertrans.cn/1/75/7475/7475-36.png