Franklin JM, Dejene S, Huybrechts KF, Wang SV, Kulldorff M, Rothman KJ. A bias in the evaluation of bias comparing randomized trials with nonexperimental studies. Epidemiol Methods. 2017 Apr;6(1):20160018.. doi: 10.1515/em-2016-0018.
Varadhachary GR, Karanth S, Qiao W, Carlson HR, Raber MN, Hainsworth JD, Greco FA. Carcinoma of unknown primary with gastrointestinal profile: immunohistochemistry and survival data for this favorable subset. Int J Clin Oncol. 2014;19(3):479-84. doi: 10.1007/s10147-013-0583-0
Longfield JN, Townsend TR, Cruess DF, Stephens M, Bishop (Johannes) C, Bolyard C, Hutchinson E. Methicillin-resistant Staphylococcus aureus (MRSA): risk and outcome of colonized vs. infected patients. Infect Control. 1985 Nov;6(11):445-50. doi: 10.1017/S0195941700064791