title: The spectrum of seven preventable diseases at Dr. Pirngadi Hospital Medan, Indonesia.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007214:Indonesia; D007223:Infant; D017053:Infection Control; D007239:Infections / Q000453:epidemiology*; D012189:Retrospective Studies; D014611:Vaccination