2. Disease classification
Author: Angelo Ravelli
Publisher: Springer International Publishing
Over the years, several classification systems for chronic arthritis in childhood have been proposed. In the 1970 s, two sets of criteria were developed: those for juvenile rheumatoid arthritis (JRA), devised by a committee of the American College of Rheumatology (ACR), and those for juvenile chronic arthritis (JCA), established by the European League Against Rheumatism (EULAR).