Koen Milisen (PhD, RN) was trained as a health scientist and as a clinical nurse. He is full Professor of Care for Older Persons and head of the Academic Center for Nursing and Midwifery at the Department of Public Health and Primary Care, KU Leuven (Belgium) and Clinical Nurse Scientist at the Division of Geriatric Medicine at the University Hospitals of Leuven (Belgium). He has extensive clinical, teaching and research expertise in the care for frail older persons. More specifically his work focuses on the prevention of delirium, falls and restraint use; and on the development of geriatric care models. Koen Milisen is president of the Flemish Center of Expertise for Falls and Fracture Prevention, member of the steering committee and co-workgroup leader of the Global Guidelines for Falls in Older Adults initiative, past president of the UZ Leuven Delirium Working Group and Senior editor at BMC Geriatrics.