CHRONIC RESPIRATORY DISEASE. THE RATIONALE OF FIELD SURVEYS.
D002908:Chronic Disease; D004739:England; D006801:Humans; D009017:Morbidity; D009026:Mortality; D012120:Respiration Disorders; D012140:Respiratory Tract Diseases; D014852:Wales
ENGLAND; MORBIDITY; MORTALITY; RESPIRATORY TRACT DISEASES; WALES