?:authorAffiliation
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[\'Division of Pulmonary and Critical Care Medicine, Daegu Catholic university hospital.\', \'Department of Internal Medicine, School of Medicine, Kyungpook National University.\', \'Division of Pulmonology, Department of Internal Medicine, Keimyung University Dongsan Hospital, Keimyung University School of Medicine.\', \'Division of Pulmonary and Critical Care Medicine, Kyungpook National University Chilgok Hospital.\', \'Division of Pulmonary and Critical Care Medicine, Deagu Fatima Hospital.\', \'Division of Pulmonary and Critical Care Medicine, Yeungnam University Medical Center, Daegu, Republic of Korea.\']
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