Supplemental material, sj-png-4-dhj-10.1177_20552076231219432 for The preliminary efficacy of virtual agent-assisted intelligent rehabilitation treatment (Echo app v2.0) in patients with alcohol use disorders: Study protocol for a randomized controlled trial by Shuo Li, Dapeng Zhang, Jingyang Liu, Hang Su, Lei Guo, Qianying Wu, Jiang Du, Haifeng Jiang, Na Zhong, Chuanning Huang, Tianzhen Chen and Min Zhao in DIGITAL HEALTH