A STUDY OF THE EPIDEMIOLOGY OF RESPIRATORY DISEASE IN A SMALL SCHOOL.
D001431:Bacteriological Techniques; D004813:Epidemiology; D006801:Humans; D010614:Pharynx; D012140:Respiratory Tract Diseases; D012572:School Health Services; D013290:Streptococcal Infections; D013333:Student Health Services
BACTERIOLOGICAL TECHNICS; EPIDEMIOLOGY; PHARYNX; RESPIRATORY TRACT DISEASES; SCHOOL HEALTH; STREPTOCOCCAL INFECTIONS; STUDENT HEALTH SERVICES