Fig. 1
From: The epidemiology of mild traumatic brain injury: the Trondheim MTBI follow-up study
Flow chart of the identification of patients and the enrolment into the Trondheim MTBI follow-up study. Legend: The filled boxes and the broad arrows shows the identification of all patients with MTBI in the study period. The boxes connected with thin narrows represent the recruitment to the Trondheim MTBI follow-up study. MTBI = mild traumatic brain injury; GP = general practitioner