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  2. Whooping-cough:...
  3. Whooping-cough: Difficulties in Diagnosis and Ineffectiveness of Immunization
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Whooping-cough: Difficulties in Diagnosis and Ineffectiveness of Immunization

Br Med J 1965; 2 doi: https://doi.org/10.1136/bmj.2.5462.623 (Published 11 September 1965) Cite this as: Br Med J 1965;2:623
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