van Linschoten, Robbart The PEX study - Exercise therapy for patellofemoral pain syndrome: design of a randomized clinical trial in general practice and sports medicine [ISRCTN83938749]. [electronic resource] - BMC musculoskeletal disorders Mar 2006 - 31 p. digital Publication Type: Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 1471-2474 Standard No.: 10.1186/1471-2474-7-31 doi Subjects--Topical Terms: AdolescentAdultArthralgia--physiopathologyClinical ProtocolsExercise Therapy--methodsHumansKnee JointPatellaResearch DesignSyndrome