Ungthavorn, P2009-05-272009-05-271981-05-01Ungthavorn P. Tuberculin reactions in pre-school Thai children after BCG vaccination at birth. Journal of the Medical Association of Thailand. 1981 May; 64(5): 231-5http://imsear.searo.who.int/handle/123456789/38583Chotmaihet Thangphaet.engAge FactorsBCG VaccineChild, PreschoolFollow-Up StudiesHumansInfantThailandTuberculin TestTuberculosis --prevention & controlTuberculin reactions in pre-school Thai children after BCG vaccination at birth.Journal Article