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.
Burke GL, Anthony MS, Vitolins M. Dietary soy protein and lipids: a strategy for primary prevention of cardiovascular disease? Current opinion in endocrinology diabetes and obesity. 1996 Dec;3(6):508-13.