RETRACTED: Salivary amylase and stress during stressful environment: three Mars analog mission crews study.

This article has been retracted: please see Elsevier Policy on Article Withdrawal (https://www.elsevier.com/about/our-business/policies/article-withdrawal). This article has been retracted at the request of the Editor-in-Chief based on the outcome of an investigatory report conducted by the Executive Board at Vrije Universiteit Amsterdam that was recently brought to the attention of the journal. Investigating allegations, the Executive Board found evidence of significant plagiarism in multiple sections of this article with an article published in the American Journal of Human Biology (24:468-472 (2012), https://onlinelibrary.wiley.com/doi/full/10.1002/ajhb.22247). One of the conditions of submission of a paper for publication is that authors declare explicitly that their work is original and has not appeared in a publication elsewhere. Re-use of any data should be appropriately cited. As such this article represents a severe abuse of the scientific publishing system. The scientific community takes a very strong view on this matter and apologies are offered to readers of Neuroscience Letters that this was not detected during the submission process. The investigatory report conducted by the Executive Board at Vrije Universiteit Amsterdam can be found here.