RT Journal Article SR Electronic T1 External research service with critical appraisal of the medical literature at a university medical centre JF Quality and Safety in Health Care JO Qual Saf Health Care FD BMJ Publishing Group Ltd SP 297 OP 297 DO 10.1136/qhc.11.3.297 VO 11 IS 3 A1 Juche, A A1 Euler, U A1 Brüggenjürgen, B A1 Willich, S N A1 Kunz, R YR 2002 UL http://qualitysafety.bmj.com/content/11/3/297.1.abstract AB