RT Journal Article SR Electronic T1 Developing healthcare systems to support exercise: exercise as the fifth vital sign JF British Journal of Sports Medicine JO Br J Sports Med FD BMJ Publishing Group Ltd and British Association of Sport and Exercise Medicine SP 473 OP 474 DO 10.1136/bjsm.2010.083469 VO 45 IS 6 A1 Robert Sallis YR 2011 UL http://bjsm.bmj.com/content/45/6/473.abstract AB