1 ACURA Rheumatology Clinics, Bad Kreuznach, Germany. ktriantafyllias@gmail.com.
2 Department of Internal Medicine I, Division of Rheumatology and Clinical Immunology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany.
3 ACURA Rheumatology Clinics, Bad Kreuznach, Germany.
4 ACURA Rheumatology Clinics, Bad Kreuznach; and Department of Internal Medicine I, Division of Rheumatology and Clinical Immunology, University Medical Center of the Johannes Gutenberg University, Mainz, Germany.