SDC1 and cardiac arrest: Variables independently associated with admission biomarkers reflecting endothelial glycocalyx and cell activation and/or damage, and endothelial cell junction function (syndecan-1, sE-selectin, thrombomodulin and sVE-cadherin, respectively) by backwards multivariate linear regression analysis in 163 patients admitted to a tertiary university hospital after out-of-hospital cardiac arrest.