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
Bernfort L, Brodtkorb T. QALY som effektmått inom vården : möjligheter och begränsningar. Linköping: linköping University Electronic Press. Cmt- Rapport. 2012.
Brodtkorb T. National system for assessment, prioritization and introduction of non-pharmaceutical health technologies, a pilot study. Cmt- Rapport. 2010.
Rothman KJ, Arellano F. Elevating the level of scientific discourse. Int J Occup Environ Health. 2005 Sep 1;11(3):327-8.