RT Journal Article SR Electronic T1 Topical diclofenac improved pain and physical function with no systemic side effects in primary osteoarthritis of the knee JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 81 OP 81 DO 10.1136/ebm.10.3.81 VO 10 IS 3 YR 2005 UL http://ebm.bmj.com/content/10/3/81.abstract AB