Cost Utility Analysis of Internet-Based Cognitive Behavioral Therapy for Major Depressive Disorder: Randomized Controlled Trial - Wenjing Zhou; Yan Chen; Herui Wu; Hao Zhao; Yanzhi Li; Guangduoji Shi; Wanxin Wang; Yifeng Liu; Yuhua Liao; Huimin Zhang; Caihong Gao; Jiejing Hao; et al. (Journal of Medical Internet Research)