1. Department of Medicine, Harvard Medical School, Boston, Massachusetts, USA
2. Department of the History of Science, Harvard University, Cambridge, Massachusetts, USA
3. Department of Health Policy and Management, Johns Hopkins Bloomberg School of Public Health, Baltimore, Maryland, USA
4. Department of Health Information Science, Western University, London, Ontario, Canada
5. Department of Community Health and Epidemiology, University of Saskatchewan College of Medicine, Saskatoon, Saskatchewan, Canada