THE SEARCH FOR MUCOVISCIDOSIS IN CHILDREN AFFECTED WITH CHRONIC RESPIRATORY AND GASTROINTESTINAL DISEASES.
D000293:Adolescent; D002648:Child; D019411:Clinical Laboratory Techniques; D003550:Cystic Fibrosis; D005767:Gastrointestinal Diseases; D006801:Humans; D007223:Infant; D007753:Laboratories; D012140:Respiratory Tract Diseases
ADOLESCENCE; CHILD; CYSTIC FIBROSIS; DIAGNOSIS, LABORATORY; GASTROINTESTINAL DISEASES; INFANT; RESPIRATORY TRACT DISEASES