1. Conception probabilities at different days of menstrual cycle in Chinese women 
Xiao Bilian, M.D., Zhao Heng, B.S., Wu Shang-chun, M.S., Jing Xiao-ping, B.S., He Chang-hai, B.S., Shao Wen-qi, B.S., Lei Zhen-wu, B.S. 
Fertility and Sterility 
Volume 94, Issue 4, Pages (September 2010)
DOI: /j.fertnstert
Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Pregnancy rates with single and multiple episodes of intercourse in one menstrual cycle are shown. The lines represent the pregnancy rates with a single episode (diamonds) and multiple episodes (squares) of intercourse during the menstrual cycle from day −7 to day +1 in relation to ovulation.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2010 American Society for Reproductive Medicine Terms and Conditions