1. Division of Basic and Translational Research, Department of Obstetrics and Gynecology, The University of Texas Medical Branch at Galveston , Galveston, TX, USA
2. Department of Biochemistry and Molecular Biology, College of Medicine, University of the Philippines Manila, Manila, Philippines
3. Department of Obstetrics and Gynecology, Division of Maternal-Fetal Medicine, College of Physicians and Surgeons, Columbia University Medical Center, New York, NY, USA