RT Journal Article SR Electronic T1 Peri-Arthritis of the Shoulder JF Annals of the Rheumatic Diseases JO Ann Rheum Dis FD BMJ Publishing Group Ltd and European League Against Rheumatism SP 2 OP 16 DO 10.1136/ard.11.1.2 VO 11 IS 1 A1 Hansen, Erik Bergholt YR 1952 UL http://ard.bmj.com/content/11/1/2.abstract AB