The Glasgow Coma Scale (GCS), GCS Aid, GCS-P score, GCS P-Age CT prognostic charts and GCS verbal score imputation tool may all be used for clinical care and clinical research at no cost. No license is required. The copywrite of Glasgow University (GCS), and Sir Graham Teasdale (GCS Aid, GCS-P, GCS-P Age CT prognostic charts and imputation tool) should be acknowledged.