Petchclai, BSuwattika, P2009-05-272009-05-271978-12-01Petchclai B, Suwattika P. Diphtheria and tetanus antitoxin levels in the maternal and cord blood of Thai infants. Journal of the Medical Association of Thailand. 1978 Dec; 61(12): 672-4http://imsear.searo.who.int/handle/123456789/41552Chotmaihet Thangphaet.engDiphtheria --immunologyDiphtheria Antitoxin --analysisFemaleFetal Blood --analysisHumansInfant, NewbornInfant, Newborn, Diseases --immunologyPregnancyRiskTetanus --immunologyTetanus Antitoxin --analysisJournal Article