RT Journal Article SR Electronic T1 Spreading human factors expertise in healthcare: untangling the knots in people and systems JF BMJ Quality & Safety JO BMJ Qual Saf FD BMJ Publishing Group Ltd SP 793 OP 797 DO 10.1136/bmjqs-2013-002036 VO 22 IS 10 A1 Ken Catchpole YR 2013 UL http://qualitysafety.bmj.com/content/22/10/793.abstract AB