http://reply.papertrans.cn/3/287/28623/28623-31.png
Submitted on: 14 April 2015.
Revised on: 28 May 2015.
Accepted on: 11 June 2015.
STATISTICAL METHODS IN MEDICAL RESEARCH
http://reply.papertrans.cn/3/287/28623/28623-33.png
Submitted on: 03 December 2013.
Revised on: 16 January 2014.
Accepted on: 06 February 2014.
STATISTICAL METHODS IN MEDICAL RESEARCH
http://reply.papertrans.cn/3/287/28623/28623-35.png
http://reply.papertrans.cn/3/287/28623/28623-36.png