RT Journal Article SR Electronic T1 Epidemiology and the delivery of health care services: Methods and application JF Journal of Epidemiology and Community Health JO J Epidemiol Community Health FD BMJ Publishing Group Ltd SP 604 OP 604 DO 10.1136/jech.50.5.604 VO 50 IS 5 A1 Steve Kisely YR 1996 UL http://jech.bmj.com/content/50/5/604.1.abstract AB