1. Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University, School of Medicine, New Haven, CT, USA
2. Department of Comparative Medicine, Yale University, School of Medicine, New Haven, CT, USA
3. Department of Obstetrics, Gynecology and Reproductive Sciences, University of Vermont, School of Medicine, Burlington, VT, USA
4. Department of Cell Biology, University of Calabria, Arcavacata di Rende, CS, Italy