Adverse Events Following the 2-,4-,6- and 12-Month Vaccination.
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*Events in risk and control periods overwhelmingly represent distinct individuals, however a small number of children experienced an event in both the risk and control intervals (for example: 63 children had events in both the risk and control periods following the 2 month vaccination out of 4681 total events).∧p-value for test of differences among levels of birth order categories.
创建时间：
2015-12-02
