1. A randomized controlled trial of increasing recombinant follicle-stimulating hormone after initiating a gonadotropin-releasing hormone antagonist for in vitro fertilization-embryo transfer 
Anthony M. Propst, M.D., G. Wright Bates, M.D., Randal D. Robinson, M.D., Nancy J. Arthur, R.N., Joseph E. Martin, M.D., Greg S. Neal, M.D. 
Fertility and Sterility 
Volume 86, Issue 1, Pages (July 2006)
DOI: /j.fertnstert
Copyright © 2006 American Society for Reproductive Medicine Terms and Conditions

2. FIGURE 1
Schematic representation of the two stimulation protocols. The control group maintained the same dose of rFSH for at least 2 days after starting a GnRH antagonist. The step-up group received an additional dose of 75 IU of rFSH for at least 2 days after starting a GnRH antagonist.
Propst. Increasing rFSH with a GnRH antagonist. Fertil Steril 2006.
Fertility and Sterility  , 58-63DOI: ( /j.fertnstert )
Copyright © 2006 American Society for Reproductive Medicine Terms and Conditions

3. FIGURE 2
Mean group estradiol response after initiation of ganirelix acetate in the control group (red line) and the step-up group (green line). The percentage increase over 2 days was similar between the two groups.
Propst. Increasing rFSH with a GnRH antagonist. Fertil Steril 2006.
Fertility and Sterility  , 58-63DOI: ( /j.fertnstert )
Copyright © 2006 American Society for Reproductive Medicine Terms and Conditions