Randomization procedure
DISEASE
The study used a randomized controlled wait-list design. All participants attended an initial evaluation of 1 h at inclusion (T0), which consisted of a non-directive interview focused on the patient’s experience of the disease, followed by an initial emotional regulation assessment (T0). After the initial evaluation, each participant was randomized within one of the two following groups: immediate intervention group (G1) and delayed intervention group (G2). The randomization list was created with Microsoft Excel software by the statistician, without blocking, before the investigators made the inclusions. Staff who included participants and made treatment allocations were blinded to this list until the initial evaluation was completed, after which the trial was conducted in an open-label fashion.