[size=0.8465em]Rheumatology (Oxford). 2014 Jan;53(1):153-60. doi: 10.1093/rheumatology/ket290. Epub 2013 Oct 17. Costs of rheumatoid arthritis during the period 1990-2010: a register-based cost-of-illness study in Sweden.[size=0.923em]Kalkan A[size=0.8461em]1, Hallert E, Bernfort L, Husberg M, Carlsson P.