RT Journal Article SR Electronic T1 The data of diagnostic error: big, large and small JF BMJ Quality & Safety JO BMJ Qual Saf FD BMJ Publishing Group Ltd SP 499 OP 501 DO 10.1136/bmjqs-2018-007917 VO 27 IS 7 A1 Dhaliwal, Gurpreet A1 Shojania, Kaveh G YR 2018 UL http://qualitysafety.bmj.com/content/27/7/499.abstract AB