Frequent Users of Hospital Emergency Departments in Korea Characterized by Claims Data from the National Health Insurance: A Cross Sectional Study

• Jung Hoon Woo,

  Affiliation Department of Biomedical Informatics, Columbia University, New York, New York, United States of America

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• Zachary Grinspan,

  Affiliation Department of Healthcare Policy and Research, Weill Cornell Medical College, New York, New York, United States of America

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• Jason Shapiro,

  Affiliation Department of Emergency Medicine, Mount Sinai School of Medicine, New York, New York, United States of America

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• Sang Youl Rhee

  * E-mail: bard95@hanmail.net

  Affiliation Department of Internal Medicine, Kyung Hee University School of Medicine, Seoul, Korea

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