1. The Center for Human Reproduction; New York NY USA
2. Department of Obstetrics and Gynecology; Albert Einstein College of Medicine; Bronx NY USA
3. Foundation for Reproductive Medicine; New York NY USA
4. Department of Obstetrics and Gynecology; Vienna University School of Medicine; Vienna Austria
5. Department of Obstetrics and Gynecology; Wake Forest School of Medicine; Winston-Salem NC USA
6. Laboratory for Stem Cell Biology and Molecular Embryology; The Rockefeller University; New York NY USA