RT Journal Article SR Electronic T1 The style of nursing leadership in hospitals is an independent risk factor for 30-day mortality of patients in acute care JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP ebnurs1140 DO 10.1136/ebn1140 A1 Lisbeth Fagerström YR 2011 UL http://ebn.bmj.com/content/early/2011/01/18/ebn1140.abstract AB