A Mobile Phone–Based Self-Monitoring Tool for Perioperative Gastric Cancer Patients With Incentive Spirometer: Randomized Controlled Trial

Ji Yeong Soh   ^{1 *} , RN ;   Se Uk Lee   ^{2 *} , MD ;   Inpyo Lee   ³ , MS ;   Ki Sang Yoon   ⁴ , BD ;   Changho Song   ³ , BS ;   Nam Hun Kim   ⁵ , MS ;   Tae Sung Sohn   ⁶ , MD ;   Jae Moon Bae   ⁶ , MD ;   Dong Kyung Chang   ^{1, 7, 8} , MD ;   Won Chul Cha   ^{8, 9, 10} , MD

¹ Department of Digital Health, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Gangnam-gu, Republic of Korea

² Department of Emergency Medicine, Seoul National University Hospital, Seoul, Republic of Korea

³ Product Development Division, BreaThings Co, Ltd, Seoul, Republic of Korea

⁴ R&D Division, BreaThings Co, Ltd, Seoul, Republic of Korea

⁵ Camera R&D Group, Samsung Electronics, Seoul, Republic of Korea

⁶ Department of Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea

⁷ Department of Gastroenterology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea

⁸ Health Information and Strategy Center, Samsung Medical Center, Seoul, Republic of Korea

⁹ Department of Digital Health, Samsung Advanced Institute for Health Sciences & Technology, Sungkyunkwan University, Seoul, Republic of Korea

¹⁰ Department of Emergency Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea

*these authors contributed equally