rayonnement (1) habitant (1) exposition (1) dose (1) dosage (1) abords (agglomération) (1) Databases (1) Databases (1) Databases (1) X-rays (1) Tomography (1) Swiss (1) Radiography (1) Radiation (1) Population (1) Human beings (1) Hospitals (1) Examinations (1) Average (1) Population (1) Modality (1) Number (1) Radiography (1) Tomography (1) Hospitals (1) Examinations (1)