1. Division of General and Community Pediatrics, Department of Pediatrics, Center for Breastfeeding Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
2. Division of General Pediatrics, Department of Pediatrics, East Tennessee State University, Johnson City, Tennessee.
3. Division of General Pediatrics, Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, Tennessee.
4. Division of Neonatology, Department of Pediatrics, Vanderbilt University School of Medicine, Nashville, Tennessee.
5. Tennessee Initiative for Perinatal Quality Care, Nashville, Tennessee.
6. Division of Neonatology, Department of Pediatrics, University of Utah, Salt Lake City, Utah.
7. Primary Children's Hospital, Intermountain Healthcare, Salt Lake City, Utah.