This is a website for the clinical trial Calcium for Out-of-Hospital Cardiac Arrest: A Randomized, Double-Blind, Placebo-Controlled Trial (COCA). The information on this site is targeted healthcare providers. If you are a patient or a relative seeking information, please see the menu Dansk Information (Danish information). Please use the contact information below if there are any comments or questions.

The trial's main results have been published in the Journal of the American Medical Associtation (JAMA).