1. Oral contraceptives maintain a very thin endometrium before operative hysteroscopy 
Daniel R. Grow, M.D., Khosro Iromloo, M.D. 
Fertility and Sterility 
Volume 85, Issue 1, Pages (January 2006)
DOI: /j.fertnstert
Copyright © 2006 American Society for Reproductive Medicine Terms and Conditions

2. FIGURE 1
Endometrial thickness as measured by transvaginal ultrasound during menses, while taking OC, in the late follicular phase, and in the late luteal phase. Endometrial measurements during menses and while taking OC are similar and statistically thinner than during the late follicular or luteal phases.
Grow. Oral contraceptives before hysteroscopy. Fertil Steril 2006.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2006 American Society for Reproductive Medicine Terms and Conditions