RT Journal Article SR Electronic T1 Tocilizumab for the treatment of polyarteritis nodosa: a systematic literature review JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP annrheumdis-2020-218710 DO 10.1136/annrheumdis-2020-218710 A1 Akiyama, Mitsuhiro A1 Kaneko, Yuko A1 Takeuchi, Tsutomu YR 2020 UL http://ard.bmj.com/content/early/2020/09/08/annrheumdis-2020-218710.abstract AB