Authors: Hye Young Sung; Se Hyun Cho; Sung Bo Sim; Jin Il Kim; Dae Young Cheung; Soo-Heon Park; Joon-Yeol Han; Se Min Lee; Chee Ho Noh; Yong-Bum Park; Seung Eun Jung; Seon Hui Lee; Kyu Yong Choi Journal: J Korean Med Sci Date: 2009-06-16 Impact factor: 2.153