Mascarenhas, L. 2021. Letter to the Editor concerning “HIPTCN: Prospective Observational Study of Hypocoagulated Head Trauma Patients with Normal Admission Computed Tomography Scan”. Acta Médica Portuguesa. 34, 9 (Aug. 2021), 634–635. DOI:https://doi.org/10.20344/amp.16655.