High HbA1c is associated with decreased 6-month survival and poor outcomes after out-of-hospital cardiac arrest: a retrospective cohort study oleh Junhaeng Lee, Joo Suk Oh, Jong Ho Zhu, Sungyoup Hong, Sang Hyun Park, Ji Hoon Kim, Hyungsoo Kim, Mingu Seo, Kiwook Kim, Doo Hyo Lee, Hyun Ho Jung, Jungtaek Park, Young Min Oh, Semin Choi, Kyoung Ho Choi