1. The Changed Status of Diphtheria Immunity;Cohen;Pediatrics,1949
2. Medical Progress: Active Immunization;Edsall;New England J. Med.,1946
3. Schick Test in Adults;Cameron;J. Pub. Health,1941
4. Susceptibility of Adult Population to Diphtheria;Levy;Illinois M. J.,1942
5. Immunity to Diphtheria in Army Personnel;Karelitz;War Med.,1944