the preferred walking speed ( pws ) and the physiological cost index ( pci ) related to achieving that pws are shown to be abnormal in rheumatoid arthritis ( ra ) and objective improvement can be demonstrated with naproxen and indomethacin , two commonly-used nonsteroidal anti-inflammatory drugs ( nsaids ) .
C0003873
rheumatoid arthritis
C0021246
indomethacin