Christiansen S, Christensen S, Pedersen L, Gammelager H, Layton JB, Brookhart MA, Christiansen CF. Timing of renal replacement therapy and long-term risk of chronic kidney disease and death in intensive care patients with acute kidney injury. Crit Care. 2017 Dec 28;21(1):326. doi: 10.1186/s13054-017-1903-y
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