Introduction to special theme issue on health insurance in the United States.
Schiff
Gordon
G
Division of General Internal Medicine, Brigham and Women's Hospital, Boston, Massachusetts 02120, USA. GSCHIFF@PARTNERS.ORG
D006291:Health Policy; D006302:Health Services Research; D007348:Insurance, Health; D008484:Medicaid; D006278:Medicare; D014481:United States