The assessment of vertebral deformity: A method for use in population studies and clinical trials - McCloskey, E. V.; Spector, T. D.; Eyres, K. S.; Fern, E. D.; O'Rourke, N.; Vasikaran, S.; Kanis, J. A. (Springer, 1993)
http://dx.doi.org/10.1007/BF01623275
Keywords: WW-YZ