Schäfer Valentin S, Juche Aaron, Ramiro Sofia, Krause Andreas, Schmidt Wolfgang A
Medical Centre for Rheumatology Berlin-Buch, Immanuel Krankenhaus Berlin, Berlin, Germany.
Department of Rheumatology, Leiden University Medical Centre, Leiden, The Netherlands.
Rheumatology (Oxford). 2017 Sep 1;56(9):1632. doi: 10.1093/rheumatology/kex289.