Letter: Whooping-cough vaccination.
D002648:Child; D002675:Child, Preschool; D005069:Evaluation Studies as Topic; D006801:Humans; D007223:Infant; D010567:Pertussis Vaccine / Q000592:standards / Q000633:toxicity*; D014917:Whooping Cough / Q000517:prevention & control*
D010567:Pertussis Vaccine