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...] among others, and have been linked to outbreaks of [[vaccine-preventable disease]]s.<ref name="Goertzel2010"/><ref name="Thresher-Andrews2013"/><ref name="G ...ccination rates and have been linked to outbreaks of [[vaccine-preventable disease]]s.<ref name="Thresher-Andrews2013"/><ref name="Goertzel2010">{{cite journa