关于此retraction的翻译（粗糙版）
Retraction: Cheng B-Q, et al. Chemoembolization combined with radiofrequency ablation for patients with hepatocellular carcinoma larger than 3 cm: a randomized controlled trial. JAMA. 2008;299(14):1669-1677.
Catherine D. DeAngelis, MD, MPH; Phil B. Fontanarosa, MD, MBA
撤回：程宝泉等 ，化学栓塞术与射频消融联合治疗大于3cm的肝细胞肝癌，随机对照试验。美国医学会杂志2008;299(14):1669-1677.，Catherine D. DeAngelis, MD, MPH; Phil B. Fontanarosa, MD, MBA
JAMA. 2009;301(13) doi:10.1001/jama.2009.640).
In the April 9, 2008, issue of JAMA, an article entitled "Chemoembolization Combined With Radiofrequency Ablation for Patients With Hepatocellular Carcinoma Larger Than 3 cm: A Randomized Controlled Trial" was published by Dr Cheng and colleagues.1 We subsequently received information that raised concerns about the integrity of the data and the veracity of the report. We conducted an extensive internal investigation into these concerns, contacted the primary author of the study, and also notified Shandong University, the authors' institution, expressing our concerns about the conduct of the trial and the integrity of the data. Based on the responses we received from the authors, we continued to have concerns about the validity and integrity of the study, and therefore requested a formal investigation by the authors' institution.
在2008年4月9日的美国医学会杂志上，程博士和他的同事们发表了一篇题为“化学栓塞术与射频消融联合治疗大于3cm的肝细胞肝;随机对照试验”的文章。之后我们收到了一些信息，对这篇文章数据的真实性提出质疑。针对这些质疑我们展开了广泛而深入的调查，联系了此文章的主要作者，并通知了山东大学，也就是作者所在单位，向其表达了我们对此试验及其数据真实性的担心。基于作者的反应，我们对对此研究的有效性及真实性的质疑没有消除，因此对作者所在单位提出展开正式调查的要求。
On March 23, 2009, we received a report from Yun Zhang, MD, PhD, Vice President, Shandong University, and Dean, Shandong University School of Medicine. Dean Yun Zhang indicated that "it took a long time to make a complete investigation" because the university "organized a group of experts in the field of hepatology to investigate the article" by Cheng et al and these experts "thoroughly investigated the protocol, ethics, medical records, methods, statistics, results, and conclusions relevant to this article." In addition, this investigative group carefully studied the comments of the JAMA editors and reviewers and previous versions of the manuscript reporting the results of this study.
2009年3月23日，我们收到了张运院长的报告（md,phd,山东大学副校长，医学院院长），张院长指出，学校组织了一个由肝脏病专家组成的专家组，这些专家们详尽地调查了这篇文章的实验设计、伦理学、实验方法、数据、结果及其结论，因此调查花了很长时间。此外，此调查组还仔细研究了美国医学会杂志的编辑和检阅人的评论以及报告此项研究结果的原稿版本。
The report by the dean indicates the following:
院长的报告指出：
"Based on these investigations, we have drawn the following conclusions:
基于以上研究，我们作出如下结论：
The protocol and ethics of this study were not submitted to the Academic Committee of Shandong University Qilu Hospital for approval. Dr Cheng wrote and submitted this manuscript during his postdoctoral training in Sweden without informing our institution.
此研究的实验设计及伦理学并未递呈山东大学齐鲁医院学术委员会。程博士在瑞典进行博士后训练时写和投的此稿，并未通知我们。
This study was not a well designed, randomized and controlled clinical trial despite the fact that chemoembolization and radiofrequency ablation for patients with hepatocellular carcinoma have been performed in Shandong University Qilu Hospital for many years. Therefore, conclusions drawn from this study are not valid.
尽管使用化学栓塞和射频消融治疗肝细胞肝癌在齐鲁医院已经开展了很多年，但此研究没有经过科学的设计、随机化和对照临床试验，因而此实验得出的结论是无效的。
Because of these unscientific behaviors, we suggest that the article by Dr Cheng should be withdrawn from JAMA.
由于这些不科学的行为，我们建议美国医学会杂志撤销程博士的文章。
We apologize for any negative impacts on JAMA caused by publication of this paper. We have submitted a report on this serious issue to the Academic Committee of Shandong University and will keep you informed of further decisions on Cheng's mistakes from our university."
我们为此文章在美国医学会杂志上发表所造成的一切负面影响表示道歉。我们已经就此严重事件向山东大学学术委员会递呈了报告，并且会将我校对程的错误行为所作出的决定及时通知贵刊。
Accordingly, based on this report, we hereby retract this article from JAMA and from the medical literature. We appreciate that readers of JAMA brought their concerns about this article to our attention and their patience in allowing us to investigate, and we are grateful to the dean at Shandong University School of Medicine for the thorough and detailed investigation and professional response to our concerns. The cooperation and professional actions of all involved in this inquiry allowed for a complete investigation. This is an example of how maintaining scientific integrity for published articles requires a team effort by readers, journal editors, and the system of academic oversight.
因此，基于此，我们从美国医学会杂志及医学文献中撤回此文章。我们对向就此文章向美国医学会杂志指出质疑的读者表示感谢，并感谢他们耐心地等待我们的调查;我们还要感谢山东大学医学院的院长，因为他们展开了详尽细致的调查，并对我们的质疑做出了专业的回应。The cooperation and professional actions of all involved in this inquiry allowed for a complete investigation（？）.这说明要保证发表的文章的科学真实性，需要读者、编辑以及学术监督体系的共同努力。
