TY  - GEN
AU  - Cai,F
AU  - Zhang,R Z
TI  - [Influential factors of immunologic effect of poliovirus vaccines]
SN  - 0254-6450
PY  - 1994///0518
KW  - Age Factors
KW  - Humans
KW  - Immunization, Secondary
KW  - Poliovirus Vaccine, Oral
KW  - immunology
KW  - Vaccination
N1  - Publication Type: Journal Article; Review
ER  -