Submitted on: 04 April 2013.
Revised on: 11 May 2013.
Accepted on: 27 May 2013.
Open Access Journal of Clinical Trials
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Submitted on: 09 February 2016.
Revised on: 16 March 2016.
Accepted on: 06 April 2016.
Open Access Journal of Clinical Trials
http://reply.papertrans.cn/3/237/23625/23625-14.png
Submitted on: 16 September 2003.
Revised on: 21 October 2003.
Accepted on: 11 November 2003.
Open Access Journal of Clinical Trials
http://reply.papertrans.cn/3/237/23625/23625-16.png
Submitted on: 17 February 2001.
Revised on: 06 March 2001.
Accepted on: 31 March 2001.
Open Access Journal of Clinical Trials
Submitted on: 12 January 2005.
Revised on: 21 January 2005.
Accepted on: 31 January 2005.
Open Access Journal of Clinical Trials
http://reply.papertrans.cn/3/237/23625/23625-19.png
Submitted on: 17 June 1998.
Revised on: 06 July 1998.
Accepted on: 28 July 1998.
Open Access Journal of Clinical Trials