R. Kitphati, P. Tharmaphornpilas, W. Suppa-asa, J. Hinjampa, T. Kabbhirom, and P. Warinsathien, “Evaluation of Diphtheria Tetanus Vaccination Campaign of Thai Population in age group of 20-50 years in 2014 – 2015”, J Health Sci Thai, vol. 28, no. 1, pp. 81–94, Mar. 2019.