1. Division of Reproductive Health, Centers for Disease Control and Prevention, Atlanta, Georgia.
2. March of Dimes Foundation, White Plains, New York.
3. Mercy Hospital, St. Louis, Missouri.
4. National Institute for Children's Health Quality (NICHQ), Boston, Massachusetts.
5. California Maternal Quality Collaborative, Stanford University, Palo Alto, California.
6. Perinatal Quality Collaborative of North Carolina, Chapel Hill, North Carolina.
7. University of North Carolina, Chapel Hill, North Carolina.