David K Gardner, D.Phil., is Professor in the School of BioSciences, University of Melbourne, Parkville, Victoria, Australia.
Carlos Simón, M.D., Ph.D., Professor of Obstetrics and Gynecology, Universidad de Valencia, Instituto Universitario IVI/INCLIVA, Valencia, Spain; is Scientific Director, Igenomix S.L.; and Clinical Professor, Department of Obstetrics and Gynecology, School of Medicine, Stanford University, Stanford, C.A., U.S.A.