[1] Charite Univ Med Berlin, Charite Campus Benjamin Franklin, Dept Gastroenterol Infectiol & Rheumatol Includin, Berlin, Germany
[2] Free Univ Berlin, Berlin, Germany
[3] Humboldt Univ, Berlin, Germany
[4] Charite Univ Med Berlin, Berlin Inst Hlth, Berlin, Germany
[5] Bielefeld Univ, Dept Internal Med & Rheumatol, Klinikum Bielefeld, Bielefeld, Germany