Emery, Joanne, Naughton, Felix, Huang, Yue, Cooper, Sue, McDaid, Lisa, Dickinson, Anne, Clark, Miranda, Kinahan-Goodwin, Darren, Thomson, Ross, Phillips, Lucy, Lewis, Sarah, Coleman, Tim, "Comparison of a Daily Smartphone App and Retrospective Questionnaire Measures of Adherence to Nicotine Replacement Therapy Among Pregnant Women: Observational Study", JMIR Formative Research, 2025