RT Journal Article SR Electronic T1 Review: Amoxycillin and folate inhibitors are as effective as newer, more expensive antibiotics for acute sinusitis JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 77 OP 77 DO 10.1136/ebm.1999.4.77 VO 4 IS 3 YR 1999 UL http://ebm.bmj.com/content/4/3/77.abstract AB