Improvement of the Nasopharyngeal Swab Method of Diagnosis in Pertussis by the Use of Penicillin

Abstract
American Journal of Public Health (AJPH) from the American Public Health Association (APHA) Improvement of the Nasopharyngeal Swab Method of Diagnosis in Pertussis by the Use of Penicillin, an article from American Journal of Public Health, Vol 36 Issue 5