RT Journal Article SR Electronic T1 The Ethical Complexity of Restricting Visitors during the COVID-19 Pandemic JF BMJ Quality & Safety JO BMJ Qual Saf FD BMJ Publishing Group Ltd SP 689 OP 692 DO 10.1136/bmjqs-2023-016103 VO 32 IS 12 A1 Campbell, Louise A1 Morley, Georgina YR 2023 UL http://qualitysafety.bmj.com/content/32/12/689.abstract AB