TY - JOUR T1 - Vitamin D testing: the British Society for Rheumatology's Choosing Wisely recommendations JF - Clinical Medicine JO - Clin Med SP - 439 LP - 439 DO - 10.7861/clinmedicine.18-5-439 VL - 18 IS - 5 AU - Charlotte A Sharp AU - Elizabeth Macphie Y1 - 2018/10/01 UR - http://www.rcpjournals.org/content/18/5/439.1.abstract ER -