Timing Prior To Illness Onset

{
  "description" : "The timing of when the vaccine was given in reference to the illness onset.",
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  "date" : "2009-01-29T00:10:00+11:00",
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  "name" : "PHVS_TimingPriorToIllnessOnset_CDC",
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  "title" : "Timing Prior To Illness Onset",
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