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
Hogue SL, Goss D, Hollis K, Silvia S, White MV. Training and administration of epinephrine auto-injectors for anaphylaxis treatment in US schools: results from the EpiPen4Schools® pilot survey. J Asthma Allergy. 2016 Jun 17;9:109-15. doi: 10.2147/JAA.S106567
Allan JS, Kanda P, Kennedy RC, Cobb EK, Anthony MS, Eichberg JW. Isolation and characterization of simian immunodeficiency virus from two subspecies of African green monkeys. Aids Res Hum Retrovir. 1990 Mar;6(3):275-85.