TY  - GEN
AU  - DONCHEV,D
AU  - STOIANOVA,M
AU  - GRIGOROVA,M
AU  - BALKANSKA,V
AU  - NENKOVA,V
AU  - DUMANOVA,S
TI  - [Parapertussis in kindergartens and nurseries in Sofia]
SN  - 0372-9311
PY  - 2000///0701
KW  - Humans
KW  - Nurseries, Infant
KW  - Schools
KW  - Whooping Cough
KW  - epidemiology
N1  - Publication Type: Journal Article
ER  -