[Mass x-ray and the schools].
D006801:Humans; D013902:Radiography, Thoracic; D012574:Schools; D014376:Tuberculosis; D014397:Tuberculosis, Pulmonary / Q000517:prevention & control*; D014965:X-Rays
SCHOOLS; THORAX/radiography; TUBERCULOSIS, PULMONARY/prevention and control
Schermografia e scuola.