TY  - GEN
AU  - Salmaso,S
AU  - Tozzi,A E
AU  - Ciofi degli Atti,M L
TI  - Observer bias in acellular pertussis vaccine trials
SN  - 0031-4005
PY  - 1999///1020
KW  - Child
KW  - Drug Evaluation
KW  - statistics & numerical data
KW  - Humans
KW  - Observer Variation
KW  - Pertussis Vaccine
KW  - Research Design
N1  - Publication Type: Comment; Letter
UR  - https://doi.org/10.1542/peds.104.4.997
ER  -