Zampelis, Vasilis, Ewald Ornstein, Herbert Franzén, and Isam Atroshi. “A Simple Visual Analog Scale for Pain Is As Responsive As the WOMAC, the SF-36, and the EQ-5D in Measuring Outcomes of Revision Hip Arthroplasty”. Acta Orthopaedica 85, no. 2 (April 1, 2014): 128–132. Accessed August 23, 2024. https://actaorthop.org/actao/article/view/10055.