[1] Justus Liebig Univ Giessen, Dept Rheumatol & Clin Immunol, Campus Kerckhoff, Bad Nauheim, Germany
[2] Univ Hosp Giessen & Marburg, Giessen, Germany
[3] Dept Orthopaed & Orthopaed Surg, Giessen, Germany
[4] Agaples Markus Hosp, Frankfurt, Frankfurt, Germany