test (2) peau (2) infection (2) hôpital (2) soins de santé (2) Employees (2) Tuberculosis (2) Tuberculin (2) Skin (2) Public health personnel (2) Medical care (2) Infection (2) Examinations--Validity (2) Examinations--Interpretation (2) Tuberculosis (2) Employees (2) voyage (1) enseignement (1) norme (1) plomb (1) information (1) histoire (1) exposition (1) emploi (1) âge (1) méthode (1) analyse (1) adulte (1) taux (1) index (1)