Stuart, A. L., J. A. Pasco, S. L. Brennan-Olsen, M. Berk, A. G. Betson, K. E. Bennett, E. N. Timney, and L. J. Williams. “Sample Selection and Reasons for Non-Participation in the PRedictors and Outcomes of Incident FRACtures (PROFRAC) Study”. Journal of Public Health Research, Vol. 8, no. 1, May 2019, doi:10.4081/jphr.2019.1475.