1. KEPCO Medical Center, 308, Uicheon-ro, Dobong-gu, Seoul, South
Korea.
2. Hanyang University College of Medicine, 17, Haengdang-dong, Seongdong-gu, Seoul, South
Korea.
3. Eulji University College of Medicine, 280-1, Hagye-dong, Nowon-gu, Seoul, South Korea.
4. Ajou University Hospital, 164, World
Cup-ro, Suwon, South Korea.
5. Myongji Hospital, 697-24, Hwajung-dong, Deokyang-gu, Goyang, South
Korea.