Effectiveness of tocilizumab with and without synthetic disease-modifying antirheumatic drugs in rheumatoid arthritis: results from a European collaborative study

Cem Gabay, Myriam Riek, Merete Lund Hetland, Ellen-Margrethe Hauge, Karel Pavelka, Matija Tomšič, Helena Canhao, Katerina Chatzidionysiou, Galina Lukina, Dan C Nordström, Elisabeth Lie, Ioan Ancuta, M Victoria Hernández, Piet L M C van Riel, Ronald van Vollenhoven, Tore K Kvien