From the reviews: "This book presents the findings of the Care Keys project, research that focused on quality of life in old age, especially persons who are vulnerable, frail, or disabled, carried out in Finland, Estonia, Sweden, and the U.K. ... Professionals specializing in geriatrics and having a background in research process and tools will be most interested in this book. ... The extensive reference lists at the end of each section are a valuable part of the book." (Sharon G. Thomas, Doody's Review Services, February 2008)