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- Published online March 21, 2013.
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- *Johns Hopkins Bloomberg School of Public Health, Dept of Epidemiology, Baltimore, USA
- #Horten Centre for patient-oriented research and knowledge transfer, University of Zurich, Switzerland
- ¶Dept of General Practice, University of Amsterdam, Netherlands
- +Dept of General Practice, University of Zurich, Switzerland
- Milo A. Puhan, Johns Hopkins Bloomberg School of Public Health, 615 North Wolfe Street, Mail room E6153, Baltimore, MD 21205 USA, E-mail: mpuhan{at}jhsph.edu