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
Zhou X, Wang J, Zhang J, Copley-Merriman C, Torigoe Y, Reyes C, Seymour JF, Offner FC, Trneny M, Salles GA. Symptoms and toxicity of rituximab maintenance relative to observation following immunochemotherapy in patients with follicular lymphoma. Hematology. 2015 Apr;129(36). doi: 10.1179/1607845414Y.0000000179
Ennett ST, Bauman KE, Foshee VA, Pemberton M, Hicks KA. Parent-child communication about adolescent tobacco and alcohol use: what do parents say and does it affect youth behavior? J Marriage Fam. 2001 Feb 1;63(1):48-62.