1. Department of Internal Medicine, Dongguk University Ilsan Hospital, Dongguk University-Seoul, Graduate School of Medicine, Goyang, Korea.
2. Department of Biostatistics, Dongguk University Ilsan Hospital, Dongguk University-Seoul, Graduate School of Medicine, Goyang, Korea.
3. Department of Pathology, Dongguk University Ilsan Hospital, Dongguk University-Seoul, Graduate School of Medicine, Goyang, Korea.