Health care or healthcare is the treatment and prevention of illness. Health care is delivered by professionals in medicine, dentistry, nursing, pharmacy and allied health. The social and political issues surrounding access to healthcare in the US have led to vigorous public debate and the almost colloquial use of terms such as health care (medical management of illness), health insurance (reimbursement of health care costs), and public health (the collective state and range of health in a population). The delivery of modern health care depends on an expanding group of trained professionals coming together as an interdisciplinary team. The health-care industry incorporates several sectors that are dedicated to providing health care services and products. According to industry and market classifications, such as the Global Industry Classification Standard and the Industry Classification Benchmark, the health-care industry includes health care equipment and services as well as...