Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada; Department of Psychiatry, McGill University, Montreal, Quebec, Canada; Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada; Department of Medicine, McGill University, Montreal, Quebec, Canada; Department of Psychology, McGill University, Montreal, Quebec, Canada; Department of Educational and Counselling Psychology, McGill University, Montreal, Quebec, Canada; Biomedical Ethics Unit, McGill University, Montreal, Quebec, Canada. Electronic address: brett.thombs@mcgill.ca. Department of Clinical Psychology, Behavioural Science Institute, Radboud University, Nijmegen, the Netherlands. Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada. Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada; Department of Psychiatry, McGill University, Montreal, Quebec, Canada. Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada; Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada. Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada; Department of Psychology, McGill University, Montreal, Quebec, Canada. Department of Applied Human Sciences, Concordia University, Montreal, Quebec, Canada. Faculty of Kinesiology, University of Calgary, Calgary, Alberta, Canada. Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Quebec, Canada; Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada; Centre for Prognosis Research, School of Primary, Community and Social Care, Keele University, Staffordshire, UK. Department of Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, Quebec, Canada; Department of Medicine, McGill University, Montreal, Quebec, Canada; Respiratory Epidemiology and Clinical Research Unit, McGill University Health Centre, Montreal, Quebec, Canada. Department of Applied Human Sciences, Concordia University, Montreal, Quebec, Canada; Department of Oncology, Cumming School of Medicine, Calgary, Canada; Department of Psychosocial Resources, Tom Baker Cancer Centre, Alberta Health Services, Calgary, Alberta, Canada. Department of Psychology, Université du Québec à Montréal, Montreal, Quebec, Canada. Department of Medicine, McGill University, Montreal, Quebec, Canada; Research Institute, McGill University Health Centre, Montreal, Quebec, Canada. Scleroderma Foundation Michigan Chapter, Southfield, MI, USA. Department of Community Health Sciences, University of Calgary, Calgary, Alberta, Canada; Hotchkiss Brain Institute and O'Brien Institute for Public Health, University of Calgary, Calgary, Alberta, Canada. Northwestern Scleroderma Program, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.