<qa>  What is the final outcome of the SNC?A prospective validation study of the Scandinavian guidelines for initial management of minimal, mild and moderate head injuries in adults. Enrolling a consecutive sample of 1000 adult head injury patients from the emergency department of the Tampere University Hospital Tampere, Finland. A venous blood sample with S100 analytics storage blood is drawn from every patient. The patients are head CT-scanned according to the SNC guidelines. Outcome assessment GOSE, MRS, Rivermead PCS Questionnaire is completed as follows: 1 week, 6 months, 1 year, and 2 years. 