Faseru B, Mussulman LM, Nazir N, Ellerbeck EF, Shergina E, Scheuermann TS, Gajewski BJ, Catley D, Richter KP. Use of pre-enrollment randomization and delayed consent to maximize participation in a clinical trial of opt-in versus opt-out tobacco treatment. Subst Abus. 2022; 43(1):1035-1042.