van der Velde Gabrielle, Pham Ba', Machado Márcio, Ieraci Luciano, Witteman William, Bombardier Claire, Krahn Murray
Toronto Health Economics and Technology Assessment Collaborative and Institute for Work and Health, Toronto, Ontario, Canada.
Arthritis Care Res (Hoboken). 2011 Jan;63(1):65-78. doi: 10.1002/acr.20338.