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Neuenschwander, Beat E.; Zwahlen, Marcel; Kim, Sang Jae; Lee, Eun Gyu; Rieder, Hans L. (2002). Determination of the Prevalence of Infection with Mycobacterium tuberculosis among Persons Vaccinated against Bacillus Calmette-Guérin in South Korea. American journal of epidemiology, 155(7), pp. 654-663. Oxford University Press 10.1093/aje/155.7.654
