title: [20th century medicine and its future projections. IV. Essential features of 20th century medicine].
mesh_terms: D003469:Culture; D005544:Forecasting; D006285:Health Planning; D006291:Health Policy; D006666:History of Medicine; D049673:History, 20th Century; D012586:Science
vernacular_title: La medicina del siglo XX y su proyección futura. IV. Rasgos esenciales de la medicina del siglo XX.