Introduction: We retrospectively investigated prognostic factors for severe abdominal trauma patients evacuated by a physician-staffed helicopter emergency medical service (HEMS) and ground ambulance using the Japan Trauma Data Bank (JTDB). Methods: The study period was from January 2004 to May 2019. The subjects were divided into two groups. according to the type of outcome: the Mort... https://www.chiggate.com/3m-speedglas-9002nc-welding-helmet-fashion/