Digital Health Interventions to Improve Mental Health in Patients With Cancer: Umbrella Review. - Zhong, Chuhan; Luo, Xian; Tan, Miaoqin; Chi, Jing; Guo, Bingqian; Tang, Jianyao; Guo, Zihan; Deng, Shisi; Zhang, Yujie; Wu, Yanni (Journal of Medical Internet Research, 2025)