THE USE OF FAMILY GROUPS IN THE STUDY OF RESPIRATORY DISEASE.
D004813:Epidemiology; D005190:Family; D006801:Humans; D009017:Morbidity; D012120:Respiration Disorders; D012141:Respiratory Tract Infections; D014777:Virus Diseases
EPIDEMIOLOGY; FAMILY; MORBIDITY; RESPIRATORY TRACT INFECTIONS; VIRUS DISEASES