Soh, Ji Yeong A Mobile Phone-Based Self-Monitoring Tool for Perioperative Gastric Cancer Patients With Incentive Spirometer: Randomized Controlled Trial. [electronic resource] - JMIR mHealth and uHealth 02 2019 - e12204 p. digital Publication Type: Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 2291-5222 Standard No.: 10.2196/12204 doi Subjects--Topical Terms: AdultAgedCell Phone--instrumentationFemaleHumansMaleMiddle AgedRepublic of KoreaSelf-Management--methodsSpirometry--instrumentationStomach Neoplasms--psychology