RT Journal Article SR Electronic T1 Review: delaying a prescription reduces antibiotic use in upper respiratory tract infections JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 108 OP 108 DO 10.1136/ebm.9.4.108 VO 9 IS 4 YR 2004 UL http://ebm.bmj.com/content/9/4/108.abstract AB