Some of the most expensive fighters such as the US F-14 Tomcat, F-15 Eagle, F-22 Raptor and Russian Su-27 were employed as all-weather interceptors as well as air superiority fighter aircraft, while commonly developing air-to-ground roles late in their careers.
The health service measures that best predict subjective health status should be identifiable. Following her further degree in clinical epidemiology and biostatistics, her interest turned to the development of methods to measure subjective health status.
The ultimate goal of primary healthcare is the attainment of better health services for all. It is for this reason that World Health Organization (WHO), has identified five key elements to achieving this goal: reducing exclusion and social disparities in health (universal coverage reforms);