1. Human embryo research in Belgium: an overview
Guido Pennings, Ph.D., Seppe Segers, Sophie Debrock, Ph.D., Björn Heindryckx, Ph.D., Velichka Kontozova-Deutsch, Ph.D., Usha Punjabi, Ph.D., Hilde vande Velde, Ph.D., André van Steirteghem, Ph.D., Heidi Mertes, Ph.D. 
Fertility and Sterility 
Volume 108, Issue 1, Pages (July 2017)
DOI: /j.fertnstert
Copyright © 2017 American Society for Reproductive Medicine Terms and Conditions

2. Figure 1
Number of embryos used per year. Blue, fresh supernumerary. Orange, frozen supernumerary. Gray, fresh created for research.
Fertility and Sterility  , DOI: ( /j.fertnstert )
Copyright © 2017 American Society for Reproductive Medicine Terms and Conditions