Jo Youn Yi, Chang Young Jin, Kim Kwang-Sub, Kwak Hyun Jeong
Department of Anesthesiology and Pain Medicine, Gachon University of Medicine and Science Gil Medical Center, Incheon, Korea.
Korean J Anesthesiol. 2011 Nov;61(5):441-2. doi: 10.4097/kjae.2011.61.5.441. Epub 2011 Nov 23.