RT Journal Article SR Electronic T1 Cutting edge or blunt instrument: how to decide if a stepped wedge design is right for you JF BMJ Quality & Safety JO BMJ Qual Saf FD BMJ Publishing Group Ltd SP 245 OP 250 DO 10.1136/bmjqs-2020-011620 VO 30 IS 3 A1 Hooper, Richard A1 Eldridge, Sandra M YR 2021 UL http://qualitysafety.bmj.com/content/30/3/245.abstract AB