Chu A, Khan AM, Tu JV. The potential use of big data in cardiovascular research. Univ Tor Med J. 2017 Jul 10;94(3):25-6.
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