RT Journal Article SR Electronic T1 Situational awareness in medicine JF Quality and Safety in Health Care JO Qual Saf Health Care FD BMJ Publishing Group Ltd SP 384 OP 384 DO 10.1136/qshc.2006.020214 VO 15 IS 5 A1 H Singh A1 L A Petersen A1 E J Thomas YR 2006 UL http://qualitysafety.bmj.com/content/15/5/384.3.abstract AB