. Author manuscript; available in PMC: 2013 Dec 12.
Published in final edited form as: J Genet Genomics. 2013 Feb 10;40(3):10.1016/j.jgg.2013.02.001. doi: 10.1016/j.jgg.2013.02.001
Copyright © 2013, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, and Genetics Society of China. Published by Elsevier Limited and Science Press. All rights reserved