Desires and Needs for Quitting Both e-Cigarettes and Cigarettes Among Young Adults: Formative Qualitative Study Informing the Development of a Smartphone Intervention for Dual Tobacco Cessation

Nhung Nguyen   ^{1, 2, 3} , PhD ;   Kimberly A Koester   ⁴ , MA, PhD ;   Christine Tran   ^{2, 3} , BSc ;   Pamela M Ling   ^{1, 3} , MD, MPH

¹ Center for Tobacco Control Research and Education, University of California, San Francisco, San Francisco, CA, United States

² HEARTY lab, University of California, San Francisco, San Franscisco, CA, United States

³ Division of General Internal Medicine, Department of Medicine, University of California, San Francisco, San Francisco, CA, United States

⁴ Center for AIDS Prevention Studies, Division of Prevention Science, University of California, San Francisco, San Francisco, CA, United States