TY  - RPRT
TI  - Pertussis immunization: problems, perspectives, prospects.
AU  - E A Mortimer
PY  - 1980
DO  - 10.1080/21548331.1980.11946671
UR  - https://pubmed.ncbi.nlm.nih.gov/7419227/
ID  - 7419227
ER  -