RT Journal Article SR Electronic T1 British Society for Rheumatology guideline for diagnosis and treatment of giant cell arteritis JF Practical Neurology JO Pract Neurol FD BMJ Publishing Group Ltd SP 474 OP 475 DO 10.1136/practneurol-2020-002615 VO 20 IS 6 A1 Susan P Mollan A1 Sarah L Mackie YR 2020 UL http://pn.bmj.com/content/20/6/474.abstract AB