1. Academic Unit of Elderly Care and Rehabilitation; University of Leeds; Bradford Institute for Health Research; Bradford Teaching Hospitals NHS Foundation Trust; Bradford UK
2. Department of Psychiatry and Psychotherapy Bethel; Division of Geriatric Psychiatry; Evangelisches Klinikum Bethel; Bielefeld Germany
3. Edinburgh Delirium Research Group; Geriatric Medicine; University of Edinburgh; Edinburgh, Scotland UK
4. Department of Psychiatry and Psychotherapy Bethel; Evangelisches Klinikum Bethel; Bielefeld Germany
5. Department of Old Age Psychiatry and Psychotherapy; Klinikum Stuttgart; Stuttgart Germany