1. Department of Obstetrics and Gynecology, Pelvic Floor Research Group, University of Michigan, Ann Arbor, Michigan
2. School of Nursing, Pelvic Floor Research Group, University of Michigan, Ann Arbor, Michigan
3. Department of Biostatistics, Pelvic Floor Research Group, University of Michigan, Ann Arbor, Michigan
4. Department of Radiology, Pelvic Floor Research Group, University of Michigan, Ann Arbor, Michigan
5. Department of Mechanical Engineering, Pelvic Floor Research Group, University of Michigan, Ann Arbor, Michigan