1. Comparison of the Schick test and the haemagglutination test for detection of the level of diphtheria antitoxin in the serum;Ferencei;J Hyg Epidemiol Microbiol Immunol,1969
2. Schick test as a predictor of immunity to diphtheria and of side effects after revaccination with diphtheria vaccine;Settergren;Br Med J,1986
3. Concentration of diphtheria antitoxin in cord blood;Barr;Lancet,1949
4. Estimation of Corynebacterium diphtheriae antitoxin in human sera;Melville-Smith,1988
5. A study of reactions following administration of crude and purified diphtheria toxoid in an adult population;Pappenheimer;Am J Hyg,1950