Is radiographic progression a downside of stopping TNF-inhibitor in RA patients with low disease activity, if this is followed by flare? A sub-study of the POET-US trial. (25th October 2019) - Lamers-Karnebeek, Femke B G; Luime, Jolanda J; Jansen, Tim L; van Riel, Piet L C M; Jacobs, Johannes W G