1. Laboratory of Genital Tract Biology, Department of Obstetrics, Gynecology and Reproductive Biology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
2. Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, New York
3. Mass Spectrometry Resource, Boston University School of Medicine, Boston, Massachusetts
4. Department of Biochemistry and Molecular Biology, SUNY Upstate Medical University, Syracuse, New York