BioMed Central Page 1 of 1 (page number not for citation purposes) Virology Journal Open Access Retraction Retraction: Universal primers for HBV genome DNA amplification across subtypes: a case study for designing more effective viral primers Qingrun Zhang †1 , Guanghua Wu †1 , Elliott Richards 2 , Shan'gang Jia 1 and Changqing Zeng* 1 Address: 1 Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing 101300, China and 2 Department of Biology, College of Biology and Agriculture, Brigham Young University, Provo UT 84602, USA Email: Qingrun Zhang - zhangqr@big.ac.cn; Guanghua Wu - wugh@genomics.org.cn; Elliott Richards - elliott.richards@gmail.com; Shan'gang Jia - jsg200830@163.com; Changqing Zeng* - czeng@genomics.org.cn * Corresponding author †Equal contributors Abstract This is a retraction of the article submitted by Zhang et al. Virology J 2007, 4:92 Retraction Mr. Wu submitted this article [1] to Virology Journal on the assumption that the co-authors had agreed to the submis- sion. Since this is not the case, the authors are retracting the article. Mr. Wu is deeply sorry for any inconvenience this may have caused to the editorial and publishing staff. An apology is also extended to the readers. References 1. Zhang Q, Wu G, Richards E, Jia S, Zeng C: Universal primers for HBV genome DNA amplification across subtypes: a case study for designing more effective viral primers. Virology J 2007, 4:92. Published: 31 October 2007 Virology Journal 2007, 4:119 doi:10.1186/1743-422X-4-119 Received: 26 October 2007 Accepted: 31 October 2007 This article is available from: http://www.virologyj.com/content/4/1/119 © 2007 Zhang et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0 ), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. . Central Page 1 of 1 (page number not for citation purposes) Virology Journal Open Access Retraction Retraction: Universal primers for HBV genome DNA amplification across subtypes: a case study for. editorial and publishing staff. An apology is also extended to the readers. References 1. Zhang Q, Wu G, Richards E, Jia S, Zeng C: Universal primers for HBV genome DNA amplification across subtypes:. subtypes: a case study for designing more effective viral primers Qingrun Zhang †1 , Guanghua Wu †1 , Elliott Richards 2 , Shan'gang Jia 1 and Changqing Zeng* 1 Address: 1 Beijing Institute