1. From the Division of Neonatology, Oregon Health Sciences University, Portland, Oregon and Visiting Scholar, Packard Foundation, Center for the Future of Children, Los Altos, California; the
2. Graduate School of Management, Department of Sociology, and Center for Health Services Research in Primary Care, University of California, Davis; the
3. Practice and Quality of Care, Lucile Salter Packard Children's Hospital of Stanford, Palo Alto, California; and the
4. Center for the Future of Children, David and Lucile Packard Foundation, Los Altos, California.