ACPA	anti-citrullinated protein antibodies
ACR	American College of Rheumatology
CK	creatine kinase
DMARDs	Disease Modifying Anti-Rheumatic Drugs
EULAR	European League Against Rheumatism
FLS	fibroblast-like synovial cells
HRQoL	health-related quality of life
MSC	Mesenchymal Stem Cells
RA	Rheumatoid arthritis
RAD	Rheumatic autoimmune diseases
SLE	systematic lupus erythematosus
SF-36	Short Form Health 36
SSc	systemic sclerosis
WOMAC	Western Ontario and McMaster Universities Osteoarthritis Index