Submitted on: 21 August 2018.
Revised on: 02 October 2018.
Accepted on: 07 November 2018.
___________________BMC Womens Health---BMC
http://reply.papertrans.cn/1/40/3938/3938-32.png
http://reply.papertrans.cn/1/40/3938/3938-33.png
http://reply.papertrans.cn/1/40/3938/3938-34.png
Submitted on: 01 November 2004.
Revised on: 06 February 2005.
Accepted on: 12 March 2005.
___________________BMC Womens Health---BMC
Submitted on: 21 September 2005.
Revised on: 24 December 2005.
Accepted on: 13 February 2006.
___________________BMC Womens Health---BMC