Response to: 'Correspondence on 'EULAR definition of difficult-to-treat rheumatoid arthritis'' by Novella-Navarro et al

Affiliations

• ¹ Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht, Utrecht, The Netherlands N.M.T.Roodenrijs@umcutrecht.nl.
• ² Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht, Utrecht, The Netherlands.
• ³ Rheumatology, Meander Medical Center, Amersfoort, The Netherlands.
• ⁴ Rheumatology, Leiden University Medical Center, Leiden, The Netherlands.
• ⁵ Genetics, Cell- and Immunobiology & Rheumatology and Clinical Immunology, Semmelweis University, Budapest, Hungary.