Acknowledgements

We would like to extend our gratitude to all those that have contributed to the Fertility Regulation Group. We are fortunate to have collaborators from around the world; dedicated authors and peer reviewers whom are committed to the integrity of research, working diligently to provide high quality systematic reviews to our network. The Fertility Regulation Group was established in 1997, with the editorial base being located in the Leiden Medical Center until 2015, moving to Auckland, and now located in Portland, Oregon starting 2018. Over the years we have had a number of talented physicians, clinicians, researchers, and content experts who have dedicated their time and resources to aid in the success of the Fertility Regulation Group.