RT Journal Article SR Electronic T1 Excess mortality associated with weekend hospital admissions may be due to patient-level differences, rather than reduced staffing or services JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP ebnurs-2017-102779 DO 10.1136/eb-2017-102779 A1 Pamela B de Cordova YR 2018 UL http://ebn.bmj.com/content/early/2018/03/06/eb-2017-102779.abstract AB