1. Basic understanding of gonadotropin-releasing hormone–agonist triggering 
Robert F. Casper, M.D. 
Fertility and Sterility 
Volume 103, Issue 4, Pages (April 2015)
DOI: /j.fertnstert
Copyright © 2015 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Mean (± standard error of the mean) serum LH concentrations (•—•) in the group of 9 women who were given GnRH-a, compared with hCG (o—o) and LH (Δ - Δ) concentrations in the group of 9 women who were given hCG for follicular maturation. The arrow indicates the time of GnRH-a and hCG administration.
The figure is from (10), with permission.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2015 American Society for Reproductive Medicine Terms and Conditions