DOI:
10.1055/s-00025477
International Archives of Otorhinolaryngology
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References
Omer SB, Enger KS, Moulton LH, Halsey NA, Stokley S, Salmon DA.
Geographic clustering of nonmedical exemptions to school immunization requirements and associations with geographic clustering of pertussis.
Am J Epidemiol 2008;
168 (12) 1389-1396
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