AUTHOR'S CORRECTION
Volume 195, no. 6, pages 1226–1235, 2013. Page 1226: The byline and affiliation line should read as given above.
Page 1234: The Acknowledgments section should read as follows.
This study was supported in part by a Grant-in-Aid for Scientific Research (A and C) and a Grant-in-Aid for Scientific Research (Kakenhi) on Priority Areas System Genomics from the Ministry of Education, Culture, Sports, Science, and Technology of Japan to the Nara Institute of Science and Technology and by NIH RC1 GM092047 to B.L.W.
We have no competing financial interests.