Effectiveness of TNF inhibitor treatment with various methotrexate doses in patients with rheumatoid arthritis: results from clinical practice. Issue 3 (5th December 2014) - Manders, Sofie H M; Kievit, Wietske; Adang, Eddy; Jansen, Tim J; Stolk, Jan N; Visser, Henk; Schilder, Annemarie M; Vonkeman, Harald E; van de Laar, Mart A F J; van Riel, Piet L C M