After the diagnostic assessment and after randomization, patients, referring doctors, and family physicians are informed in writing about the diagnosis, in the same way as for the patients randomized for group CBT. But here the patient has been put in the group for usual care with the offer to receive group CBT after 9 months. This group CBT will not be part of the primary research project (RCT), but it still takes place at The Liaison Psychiatric Clinic in Koege. Patients in the usual care group receive a letter stating that they have been randomized to 9-month with usual care, and in this period they continue usual care by their other health care providers. The patients in the usual care group are followed-up by questionnaires in the same way as the patients randomized to group CBT (see attached flowchart Figure 1). For details regarding timing and characteristics of treatment elements delivered in the group CBT see attached Figure 3.