TY  - GEN
AU  - HAMMON,W M
AU  - LUDWIG,E H
TI  - Possible protective effect of previous type 2 infection against paralytic poliomyelitis due to type 1 virus
SN  - 0096-5294
PY  - 2000///0701
KW  - Humans
KW  - Poliomyelitis
KW  - immunology
N1  - Publication Type: Journal Article
UR  - https://doi.org/10.1093/oxfordjournals.aje.a119900
ER  -