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33. The changing age structure of diphtheria patients: evidence for the effectiveness of EPI in the Sudan. Loevinsohn BP. Bull World Health Organ; 1990 Feb; 68(3):353-7. PubMed ID: 2393982 [Abstract] [Full Text] [Related]
36. [Performance of vaccinations against poliomyelitis in the province of Kraków versus the plan of elimination and eradication of this disease in Poland]. Mrozek-Budzyn D. Przegl Epidemiol; 1999 Feb; 53(3-4):319-23. PubMed ID: 10800569 [Abstract] [Full Text] [Related]