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
Martin-Richard M, Gallego R, Pericay C, Garcia Foncillas JG, Queralt B, Casado E, Barriuso J, Iranzo V, Juez I, Visa L, Saigi E, Barnadas A, Garcia-Albeniz X, Maurel J. Multicenter phase II study of oxaliplatin and sorafenib in advanced gastric adenocarcinoma after failure of cisplatin and fluoropyrimidine treatment. A GEMCAD study. Invest New Drugs. 2013 Dec;31(6):1573-9.
Smith V, Mansfield CA, Clayton (Trantham) L. Valuing a homeland security policy: countermeasures for the threats from shoulder mounted missiles. J Risk Uncertain. 2009;38(3):215-43.