Preliminary Results From a Randomized Controlled Study for an App-Based Cognitive Behavioral Therapy Program for Depression and Anxiety in Cancer Patients oleh Kyunghee Ham, Siyung Chin, Yung Jae Suh, Myungah Rhee, Eun-Seung Yu, Hyun Jeong Lee, Jong-Heun Kim, Sang Wun Kim, Su-Jin Koh, Kyong-Mee Chung