1. Department of Obstetrics, Gynecology and Reproductive Biology; College of Human Medicine; Michigan State University; Grand Rapids MI USA
2. Department of Obstetrics and Gynecology; Grand Rapids Medical Education Partners/Michigan State University; Grand Rapids MI USA
3. Department of Microbiology and Molecular Genetics; Michigan State University; East Lansing MI USA
4. Department of Obstetrics and Gynecology; Greenville Hospital System; Greenville SC USA
5. Department of Obstetrics and Gynecology; University of North Carolina; Chapel Hill NC USA