1. Department of Psychiatry, Katholieke Universiteit Leuven & University Hospitals Gasthuisberg, Leuven, Belgium;
2. Department of Obstetrics and Gynaecology, Institute for Family and Sexuality Studies, Katholieke Universiteit Leuven & University Hospitals Gasthuisberg, Leuven, Belgium;
3. New England Research Institutes, Watertown, Massachusetts;
4. Robert Wood Johnson Medical School, University of Medicine & Dentistry, Piscataway, New Jersey;
5. Department of Obstetrics, Gynecology and Reproductive Sciences, University of California San Francisco Women's Health Clinical Research Center, San Francisco, California;
6. Department of Urology, University of Washington, Seattle, Washington;
7. Yale University School of Medicine, New Haven, Connecticut;
8. The Biostatistics Center, The George Washington University, Rockville, Maryland.