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
Suchdev P, Addo O, Grant F, Martorell R, Ruth L, Patel M, Juliao P, Quick R, Flores-Ayala R. The effects of selling micronutrient powders on morbidity incidence among preschool children in Western Kenya. European J Nutr Food Saf. 2015 Aug 14;5(5):1011-2. doi: 10.9734/EJNFS/2015/21213
Brown TM, Holland J, Bokowy KL, Horblyuk R. Can transformational programs aimed at improving hospital management, leadership, and productivity systems affect financial performance? J Hospital Admin. 2013 Jul 30;2(4):111-9.