Submitted on: 22 May 1999.
Revised on: 29 August 1999.
Accepted on: 30 September 1999.
___________________CONTRACEPTION---ELSEVIER SCIENCE INC
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Submitted on: 31 January 2001.
Revised on: 31 March 2001.
Accepted on: 17 May 2001.
___________________CONTRACEPTION---ELSEVIER SCIENCE INC
http://reply.papertrans.cn/1/65/6482/6482-34.png
Submitted on: 21 May 1999.
Revised on: 21 June 1999.
Accepted on: 19 August 1999.
___________________CONTRACEPTION---ELSEVIER SCIENCE INC
Submitted on: 04 October 2017.
Revised on: 31 December 2017.
Accepted on: 17 January 2018.
___________________CONTRACEPTION---ELSEVIER SCIENCE INC