- How much of the increased incidence of heart failure in rheumatoid arthritis is attributable to traditional cardiovascular risk factors and ischemic heart disease? Crowson, C.S., Nicola, P.J., Kremers, H.M., O'Fallon, W.M., Therneau, T.M., Jacobsen, S.J., Roger, V.L., Ballman, K.V., Gabriel, S.E. Arthritis Rheum. (2005)