From the Division of Social and Community Medicine, Department of Medicine, Cambridge Hospital/Harvard Medical School, Cambridge, Massachusetts. Reprints: Steffie Woolhandler, MD, MPH, Division of Social and Community Medicine, Department of Medicine, Cambridge Hospital/Harvard Medical School, 1493 Cambridge Street, Cambridge, MA 02139. E-mail: [email protected].
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Woolhandler et al. (2007) studied this question.
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