They recruited 98 infants under the age of 1 year with one of the following complaints: apparent life-threatening event; more than 4 episodes of vomiting and no diarrhea within the previous 24 hours; seizure; or other non-specific neurologic sign or symptom such as lethargy or fussiness, symptoms that have been linked to possible iTBI. In addition to the standard workup for these conditions, the a