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Original Article
Myung-Shin Jeon, Tac-Ghee Yi, Hyun-Ja Lim, Sun-Hwa Moon, Moon-Hee Lee, Joon-Soon Kang, Chul-Soo Kim, Dae-Hyun Lee, Sun U Song 
World J Stem Cells 3(8):70-82. Published online Aug 26, 2011. doi: 10.4252/wjsc.v3.i8.70