1. aUniversity of Wisconsin-Milwaukee, Milwaukee, Wisconsin, USA
2. bChildren’s Wisconsin, Milwaukee, Wisconsin, USA
3. cRare Disorders and Health Outcomes Team, Birth Defects Monitoring and Research Branch, Division of Birth Defects and Infant Disorders, National Center on Birth Defects and Developmental Disabilities, Centers for Disease Control and Prevention, Atlanta, Georgia, USA
4. dDepartment of Pediatrics, Children’s Hospital Los Angeles, USC Keck School of Medicine, Los Angeles, California, USA
5. eDistrict Medical Group Children’s Rehabilitative Services, Phoenix, Arizona, USA
6. fCarter Consulting, Inc, Consultant to Centers for Disease Control and Prevention, Atlanta, Georgia, USA
7. gSpina Bifida Association, Arlington, Virginia, USA
8. hDepartment of Pediatrics, SUNY Upstate Medical University, Syracuse, New York, USA
9. iMcKing Consulting Corporation, Consultant to Centers for Disease Control and Prevention, Atlanta, Georgia, USA