“…Including experiential knowledge in the development of services meant that service providers developed a greater understanding of local mental health needs, and how interventions could best be designed to meet these needs. There was evidence that this could lead to more person centered care (O5 [44,48,51,59]), increased service use (O6 [44,50,59]) and efficiency (O7 [41,42,44,59,64,65]) and improved mental health and quality of life of service users (O2 [41-43, 47, 59, 66]). Some sources also reported how this helped to reduce the stigma associated with poor mental health (O3 [48,64,67]), particularly in peer-led projects, such as a Thai psychoeducation intervention where the trainers had personal experience of caring for family members with a serious mental illness [63].…”