In contrast, the new benefits package was developed on the basis of current epidemiological and demographic needs and defines in detail the health services available to the population through public resources. Expanded benefits include: additional ambulatory specialist services, with particular emphasis on clinical effectiveness; new vaccinations and neonatal screenings; and new measures of innovative technologies, such as prostheses, to replace old procedures. Moreover, there is an expanded list of chronic diseases for which services are fully covered by the National Health Service.