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
Goyal RK, Williams DH, Sansgiry SS, Essien J. Awareness and perceived usefulness of the website designed to facilitate informed health insurance purchase decisions. TPHJ. 2010 Jul;62(3):8-11.
Palka P, Fleming AD, Lange A, Fenn LN, Sutherland GR, McDicken WN. Doppler myocardial imaging: mean myocardial velocity and velocity gradient in normal subjects. Poster presented at the British Cardiac Society Annual Meeting; May 23, 1995. Yorkshire, United Kingdom. [abstract] Brit Heart J. 1996 Nov 1; 73(5 suppl 3):85.