Children’s and Caregivers’ Review of a Guided Imagery Therapy Mobile App Designed to Treat Children With Functional Abdominal Pain Disorders: Leveraging a Mixed Methods Approach With User-Centered Design

John M Hollier   ^{1, 2} , MD, MS, MPH ;   Tiantá A Strickland   ² , BA ;   C Michael Fordis   ³ , MD ;   Miranda AL van Tilburg   ^{4, 5, 6, 7} , PhD ;   Robert J Shulman   ^{1, 2, 8 *} , MD ;   Debbe Thompson   ^{2, 8 *} , RD, PhD

¹ Texas Children's Hospital, Houston, TX, United States

² Department of Pediatrics, Baylor College of Medicine, Houston, TX, United States

³ The Center for Collaborative & Interactive Technologies, Baylor College of Medicine, Houston, TX, United States

⁴ Department of Internal Medicine, Marshall University, Huntington, WV, United States

⁵ School of Social Work, University of Washington, Seattle, WA, United States

⁶ Department of Gastroenterology and Hepatology, University of North Carolina, Chapel Hill, NC, United States

⁷ Graduate Medical Education, Cape Fear Valley Hospital, Fayetteville, NC, United States

⁸ Children's Nutrition Research Center, Agricultural Research Service, United States Department of Agriculture, Houston, TX, United States

*these authors contributed equally