DOI: 10.1055/s-00025477

International Archives of Otorhinolaryngology

References

World Health Organization.
Diphtheria reported cases. WHO vaccine-preventable diseases: monitoring system 2015 global summary.

http://apps.who.int/immunization_monitoring/globalsummary/timeseries/tsincidencediphtheria.html . Accessed March 10th 2015

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