[Serological and clinical studies on virus diseases of the respiratory tract. IV. Epidemiological observations on respiratory tract diseases during the years 1957-1961].
D035843:Biomedical Research; D006801:Humans; D012137:Respiratory System; D012140:Respiratory Tract Diseases; D012141:Respiratory Tract Infections / Q000453:epidemiology*; D014777:Virus Diseases / Q000453:epidemiology*
RESPIRATORY TRACT INFECTIONS/epidemiology; VIRUS DISEASES/epidemiology