Research&Innovation Health NHS Foundation Trust SO303JB Kingdom;
School of Psychology of Environmental and Life Sciences of Southampton SO171BJ Kingdom;
Department of Italk Health NHS Foundation Trust SO509FH Kingdom;
Department of Italk Step 3 Health NHS Foundation Trust SO519FH Kingdom;
Department of Statistics and Data Science University of Science and Technology 518055 Province;
National Center for Applied Mathematics Shenzhen 518055 Province;
Nuffield Department of Primary Health Care Science of Oxford OX37JX Kingdom;
Centre for Addition and Mental Health of Toronto ON M5S;
Cognitive behavioral therapy; COMPREHEND; Cope; CONNECT; ETHNICITY; Culture;