RT Journal Article SR Electronic T1 Speaking up against unsafe unprofessional behaviours: the difficulty in knowing when and how JF BMJ Quality & Safety JO BMJ Qual Saf FD BMJ Publishing Group Ltd SP 859 OP 862 DO 10.1136/bmjqs-2017-006792 VO 26 IS 11 A1 Brian M Wong A1 Shiphra Ginsburg YR 2017 UL http://qualitysafety.bmj.com/content/26/11/859.abstract AB