1. Measurement properties of patient reported outcome measures for spondyloarthritis: A systematic review Bookmark Author: Png, K., Kwan, Y. H., Leung, Y. Y., Phang, J. K., Lau, J. Q., Lim, K. K., Chew, E. H., Low, L. L., Tan, C. S., Thumboo, J., Fong, W., and Ostbye, T. Publication year: 2018 DOI: 10.1016/j.semarthrit.2018.02.016