RT Journal Article SR Electronic T1 Nurse staffing matters: now what? JF BMJ Quality & Safety JO BMJ Qual Saf FD BMJ Publishing Group Ltd SP 241 OP 243 DO 10.1136/bmjqs-2015-004050 VO 24 IS 4 A1 Anne Sales YR 2015 UL http://qualitysafety.bmj.com/content/24/4/241.abstract AB