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The EULAR Study Group for Registers and Observational Drug Studies: comparability of the patient case mix in the European biologic disease modifying anti-rheumatic drug registers

Kearsley-Fleet, Lianne ; Závada, Jakub ; Hetland, Merete Lund ; Nordström, Dan C. ; Aaltonen, Kalle J. ; Listing, Joachim ; Zink, Angela ; Gati, Tamas ; Rojkovich, Bernadette ; Iannone, Florenzo ; Gremese, Elisa ; van Riel, Piet L. C. M. ; van de Laar, Martinus A. F. J. ; Lie, Elisabeth ; Kvien, Tore K. ; Canhão, Helena ; Fonseca, João E. ; Rotar, Žiga ; Loza, Estibaliz ; Carmona, Loreto ; Askling, Johan ; Johansson, Kari ; Finckh, Axel ; Dixon, William G. ; Hyrich, Kimme L.

In: Rheumatology, 2015, vol. 54, no. 6, p. 1074-1079