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
Novick D, Reed C, Haro JM, Gonzalez-Pinto A, Perrin E, Aguado J, Tohen M. Comparison of olanzapine and risperidone in the EMBLEM study: translation of randomized controlled trial findings into clinical practice. Int Clin Psychopharmacol. 2010 Sep;25(5):257-63.
Wolfinger RD, Gibson G, Wolfinger ED, Bennett L, Hamadeh H, Bushel P, Afshari C, Paules RS. Assessing gene significance from cDNA microarray expression data via mixed models. J Comput Biol. 2001 Jan 1;8(6):625-37.