Von rheumatoider Arthritis sind weltweit mehr als 21 Millionen Menschen betroffen, davon allein in den USA etwa 1,3 Millionen Erwachsene. ###>After 10 years, less than 50 percent of patients can continue to work or function normally on a daily basis. RA affects more than 21 million people worldwide with approximately 1.3 million adults affected in the United States.