Measuring young adult appeal for menthol and non-menthol cigarettes: protocol of a clinical trial using both laboratory and intensive longitudinal methods (PRISM) oleh Michael Smith, Andrea C Villanti, Amy M Cohn, Donald Hedeker, James Murphy, Janet Audrain-McGovern, Wallace Pickworth, Delaney Dunn, Riley Wyatt, Taylor Niznik, Whitney Cotten, Sarah J Ehlke