Cheryl Koehn is a former US National Volleyball Team member and an activist and spokesperson for RA patients. She lives in Vancouver, Canada. John Esdaile, M.D. is professor and head of the Division of Rheumatology, Department of Medicine, University of British Columbia and Scientific Director of the Arthritis Research Centre of Canada, and is a leading authority on rheumatoid arthritis. Taysha Palmer is a freelance health and science writer.