Volume 73(4); April 1958 Articles Farm medical care expenditures PMCID: PMC1951565 Age changes in body composition PMCID: PMC1951566 Poisonous fishes PMCID: PMC1951564 Methods of studying the ecology of coronary heart disease PMCID: PMC1951568 Some observations on the epidemiology of heart disease PMCID: PMC1951569 The importance of WHO to Americans PMCID: PMC1951576 Arthropod-borne encephalitis in 1956 PMCID: PMC1951563 St. Louis encephalitis in 1933: Observations on epidemiological features PMCID: PMC1951570 Oklahoma's heart disease course for multidisciplines PMCID: PMC1951574 Some epidemiological aspects of cervical cancer PMCID: PMC1951573 Animal diseases and human health: Conference report PMCID: PMC1951571 Journal Matter Original table of contents page Administrative content — journal masthead, notices, indexes, etc. | ||