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.
Christensen T, Riis AH, Hatch EE, Wise LA, Nielsen MG, Rothman KJ, Toft Sorensen H, Mikkelsen EM. Costs and efficiency of online and offline recruitment methods: a web-based cohort study. J Med Internet Res. 2017 Mar 1;19(3):e58. doi: 10.2196/jmir.6716