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V. K. Volk, R. Y. Gottshall, H. D. Anderson, Franklin H. Top, W. E. Bunney, Robert E. Serfling, Antibody Response to Booster Dose of Diphtheria and Tetanus Toxoids and Pertussis Vaccine: Thirteen Years after Inoculation of Institutionalized Subjects, Public Health Reports (1896-1970), Vol. 79, No. 5 (May, 1964), pp. 424-434
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Volk et al. (1964) studied this question.
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