Efek Propofol terhadap Cedera Otak Traumatik pada Tikus Sprague-Dawley : Kajian Ekspresi dan Konsentrasi HIF-1alfa, IL-1beta, IL-6 dan Revised Neurobehavioral Severity Scale = The Effects of Propofol on Traumatic Brain Injury in Sprague Dawley Rats: A study of HIF -1alpha, IL-1beta, IL-6 Expression and Concentrations also Revised Neurobehavioral Severity Scale