Raghunathan K, Layton JB, Ohnuma T, Shaw AD. Observational research using propensity scores. Adv Chronic Kidney Dis. 2016 Nov;23(6):367-72. doi: 10.1053/j.ackd.2016.11.010
Rak EC, Hooper SR, Belsante MJ, Burnett O, Layton B, Tauer D, Mantoo B, DeWalt D, Ferris ME. Caregiver word reading literacy and health outcomes among children treated in a pediatric nephrology practice. Clin Kidney J. 2016 Jun;9(3):510-5. doi: 10.1093/ckj/sfw015
Brookhart MA, Schneeweiss S, Avorn J, Bradbury BD, Rothman KJ, Fischer M, Mehta J, Winkelmayer WC. The effect of altitude on dosing and response to erythropoietin in ESRD. J Am Soc Nephrol. 2008 Jul 1;19(7):1389-95.