1. Paralytic disease associated with oral polio vaccines;Henderson;J. A. M. A.,1964
2. Surveillance of paralytic poliomyelitis in the United States;Hopkins;J. A. M. A.,1969
3. Paralytic poliomyelitis in a child with hypogammaglobulinemia: Probable implication of type I vaccine strain;Chang;Pediatrics,1966
4. The use of a modified Wecker technique for the serodifferentiation of type I polioviruses related and unrelated to Sabin's vaccine strain. I. Standardization and evaluation of the test;Nakano;Amer. J. Hyg.,1962
5. A simple test for serodifferentiation of poliovirus strains within the same type;Wecker;Virology,1960