Improving access to psychosocial interventions for common mental health problems in the United Kingdom: narrative review and development of a conceptual model for complex intervent... oleh Gask Linda, Bower Peter, Lamb Jonathan, Burroughs Heather, Chew-Graham Carolyn, Edwards Suzanne, Hibbert Derek, Kovandžić Marija, Lovell Karina, Rogers Anne, Waheed Waquas, Dowrick Christopher, Group AMP