hypothesis presented in the introduction sec- tion and explain the impact of the results by placing the new data within the context of the literature in the field. Do not overinterpret the data. Consider alternative explanations and discuss possible limitations associated with the study. Read the instructions to authors before pre- paring the manuscript, and follow them closely. Many papers are returned to authors because of a major failure to follow instructions. Scientific writing is in English. It is impor- tant that skills be developed to express thoughts and concepts in English so that the larger scientific community can understand them. Seek editorial assistance before submitting a paper to a journal. Ref Rencs American Medical Association. 2007. AMA Manual of Style: A Guide for Authors and Editors. 10th ed. New York:Oxford University Press. AuthorAid. 2011. AuthorAid Homepage. Available: http://www. authoraid.info [accessed 31 January 2011]. Claxton LD. 2005a. Scientific authorship. Part 1. A window into scientific fraud? Mutat Res 589:17–30. Claxton LD. 2005b. Scientific authorship. Part 2. History, recur­ ring issues, practices, and guidelines. Mutat Res 589:31–45. Claxton LD. 2007. A review of conflict of interest, competing interest, and bias for toxicologists. Toxicol Ind Health 23:557–571. Coghill AM, Garson LR, eds. 2006. The ACS Style Guide: Effective Communication of Scientific Information. 3rd ed. Washington, DC:American Chemical Society. CRT (Chemical Research In Toxicology). 2010. Chemical Research in Toxicology Homepage. Available: http://pubs.acs.org/ journal/crtoec [accessed 20 September 2010]. Day RA, Gastel B. 2006. How to Write and Publish a Scientific Paper. 6th ed. Abingdon, UK:Greenwood Press. Evaluation criteria for publishing EHP (Environmental Health Perspectives). 2010. Environmental Health Perspectives Homepage. Available: http://EHPonline. org [accessed 20 September 2010]. International Committee of Medical Journal Editors. 2010. Uniform Requirements for Manuscripts Submitted to Biomedical Journals: Writing and Editing for Biomedical Publication. Available: http://www.icmje.org/manuscript_1prepare.html [accessed 20 September 2010]. ISI Web of Knowledge. 2011. Journal Citation Reports, 2011. Available: http://www.isiknowledge.com/jcr [accessed 26 May 2011]. JPET (Journal of Pharmacology and Experimental Therapeutics). 2010. Journal of Pharmacology and Experimental Thera­ peutics Homepage. Available: http://jpet.aspetjournals.org/ [accessed 20 September 2010]. Strunk W, White EB, eds. 1999. The Elements of Style. 4th ed. New York:Longman. Toxicol Sci (Toxicological Sciences). 2010. Toxicological Sciences Homepage. Available: http://toxsci.oxfordjournals. org/ [accessed 20 September 2010]. Zeiger M, ed. 2000. Essentials of Writing Biomedical Research Papers. 2nd ed. New York:McGraw­Hill . Environmental Health Perspectives • volume 119 | number 7 | July 2011 899