Developing a Game (Inner Dragon) Within a Leading Smartphone App for Smoking Cessation: Design and Feasibility Evaluation Study

Justin S White   ^{1, 2, 3} , PhD ;   Marie K Salem   ¹ , MPH ;   Séverine Toussaert   ⁴ , PhD ;   J Lee Westmaas   ⁵ , PhD ;   Bethany R Raiff   ⁶ , BCBA-D, PhD ;   David Crane   ⁷ , PhD ;   Edward Warrender   ⁷ ;   Courtney Lyles   ⁸ , PhD ;   Lorien Abroms   ⁹ , ScD ;   Johannes Thrul   ^{10, 11, 12} , PhD

¹ Philip R Lee Institute for Health Policy Studies, University of California, San Francisco, CA, United States

² Department of Epidemiology and Biostatistics, University of California, San Francisco, CA, United States

³ Department of Health Law, Policy & Management, Boston University School of Public Health, Boston, MA, United States

⁴ Department of Economics, University of Oxford, Oxford, United Kingdom

⁵ Population Science, American Cancer Society, Atlanta, GA, United States

⁶ Department of Psychology, Rowan University, Glassboro, NJ, United States

⁷ 23 Limited, London, United Kingdom

⁸ Department of Medicine, University of California, San Francisco, CA, United States

⁹ Department of Prevention and Community Health, George Washington University, Washington, DC, United States

¹⁰ Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States

¹¹ Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University, Baltimore, MD, United States

¹² Centre for Alcohol Policy Research, La Trobe University, Melbourne, Australia