Erratum: S Merkesdal, J Ruof, J Huelsemann, T Mittendorf, S Handelmmann, W Mau H Zeidler. Indirect cost assessment in patients with rheumatoid arthritis (RA): Comparison of data from the health economic patient questionnaire HEQ-RA and insurance claims data, Arthritis Rheum (2005) 53(2) 234-240


The original article to which this Erratum refers was published in Arthritis & Rheumatism(2005)53(2)234–240