title: Safety in numbers.
authors.affiliation: Centre for Health Outcomes and Policy Research, University of Pennsylvania, USA.
authors.forename: Linda
authors.initials: L
authors.lastname: Aiken
mesh_terms: D007297:Inpatients / Q000706:statistics & numerical data*; D009726:Nurses / Q000706:statistics & numerical data / Q000600:supply & distribution*; D017063:Outcome Assessment, Health Care