Erratum to: Different expression of β subunits of the KCa1.1 channel by invasive and non-invasive human fibroblast-like synoviocytes. Issue 1 (December 2016) - Pethő, Zoltán; Tanner, Mark; Tajhya, Rajeev; Huq, Redwan; Laragione, Teresina; Panyi, Gyorgy; Gulko, Pércio; Beeton, Christine