Ilana Crome, Emeritus Professor of Addiction Psychiatry, Keele University, Keele, UK; Honorary Consultant Psychiatrist, South Staffordshire and Shropshire Healthcare NHS Foundation Trust, Stafford, UK; Honorary Professor, Queen Mary University of London, London, UK; Senior Research Fellow, Imperial College, London, UK Li-Tzy Wu, Professor of Psychiatry, Department of Psychiatry and Behavioral Sciences, School of Medicine, Duke University Medical Center, Durham, NC, USA Rahul (Tony) Rao, Visiting Researcher, Department of Old Age Psychiatry, Institute of Psychiatry, London, UK and Lead for Dual Diagnosis, Mental Health of Older Adults and Dementia Clinical Academic Group, South London and Maudsley NHS Foundation Trust, UK Peter Crome, Honorary Professor, Department of Primary Care and Population Health, University College London, London, UK; Emeritus Professor of Geriatric Medicine, Keele University, Keele, UK