RETRACTED: Threats of indicator polychlorinated biphenyls (PCBs) in six molluscs from market to food safety: A case study in Haikou City, China.

This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). This article has been retracted at the request of the Editor-in-Chief and Authors. The article is a duplicate of a paper that has already been published in the Chinese language in the Journal of Ecology and Rural Environment, 34 (2018) 1091-1095. doi:10.11934/j.issn.1673-4831.2018.12.005). One of the conditions of submission of a paper for publication is that authors declare explicitly that the paper has not been previously published and is not under consideration for publication elsewhere. As such this article represents a misuse of the scientific publishing system. The scientific community takes a very strong view on this matter and apologies are offered to readers of the journal that this was not detected during the submission process.