WHO: investment in health care offers economic benefits.
D003695:Delivery of Health Care / Q000191:economics*; D019049:Developed Countries; D003906:Developing Countries; D005381:Financing, Organized; D015658:HIV Infections / Q000453:epidemiology / Q000628:therapy*; D006297:Health Services Accessibility; D006801:Humans; D014944:World Health Organization