Saffar, M., Khalilian, A., Ajami, A., Saffar, H. and Qaheri, A. 2008. Seroimmunity to diphtheria and tetanus among mother-infant pairs; the role of maternal immunity on infant immune response to diphtheria-tetanus vaccination. Swiss Medical Weekly. 138, 1718 (May 2008), 256–256. DOI:https://doi.org/10.4414/smw.2008.11840.