RT Journal Article SR Electronic T1 Review: specific signs and symptoms can help practitioners to diagnose acute purulent sinusitis in general practice JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP 24 OP 24 DO 10.1136/ebn.6.1.24 VO 6 IS 1 YR 2003 UL http://ebn.bmj.com/content/6/1/24.abstract AB