Volume 87, Number 2, 2009

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• Editor's Introduction: In This Issue
  Bradford H. Gray

• Comparative Effectiveness Research and Evidence-Based Health Policy: Experience from Four Countries
  Kalipso Chalkidou, Sean Tunis, Ruth Lopert, Lise Rochaix, Peter T. Sawicki, Mona Nasser, and Bertrand Xerri
  (Featured article -- click here for full text)

• Toward a Transdisciplinary Model of Evidence-Based Practice
  Jason M. Satterfield, Bonnie Spring, Ross C. Brownson, Edward J. Mullen, Robin P. Newhouse, Barbara B. Walker, and Evelyn P. Whitlock

• How Do You Modernize a Health Service? A Realist Evaluation of Whole-Scale Transformation in London
  Trisha Greenhalgh, Charlotte Humphrey, Jane Hughes, Fraser Macfarlane, Ceri Butler, and Ray Pawson

• The Converged Experience of Risk and Disease
  Robert A. Aronowitz

• Health Consequences of Uninsurance among Adults in the United States: Recent Evidence and Implications
  J. Michael McWilliams

• Housing First for Homeless Persons with Active Addiction: Are We Overreaching?
  Stefan G. Kertesz, Kimberly Crouch, Jesse B. Milby, Robert E. Cusimano, and Joseph E. Schumacher

• Notes on Contributors