1. Department of Pediatrics, The Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
2. Department of Pediatrics, The A.I. duPont Hospital for Children, Wilmington, Delaware, USA
3. Department of Obstetrics and Gynecology, The Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA
4. Quality Improvement Advisor, RSG Consulting, Collingswood, New Jersey, USA