A systematic review with procedural assessments and meta-analysis of Low Level Laser Therapy in lateral elbow tendinopathy (tennis elbow) - Bjordal, Jan M.; Lopes-Martins, Rodrigo Alvaro Brandão; Joensen, Jon; Couppe, Christian; Ljunggren, Anne E.; Stergioulas, Apostolos; Johnson, Mark I. (BMC Musculoskeletal Disorders (Online), 2008)