Selection of contrasting national health systems for in-depth study.
D000349:Africa; D001208:Asia; D003695:Delivery of Health Care; D003906:Developing Countries; D004467:Economics; D005060:Europe; D006305:Health Status Indicators; D006723:Hong Kong; D006801:Humans; D007182:Income; D007223:Infant; D007226:Infant Mortality; D009026:Mortality; D009313:National Health Programs; D012424:Rural Population; D012574:Schools; D013020:South America; D013222:State Medicine; D014481:United States