Publishers' policies on self-archiving (including preprint versions) can also be found at SHERPA/Ro MEO.
"Public dissemination of manuscripts prior to, simultaneous with, or following submission to this journal, such as posting the manuscript on preprint servers or other repositories, will necessitate making a determination of whether publication of the submitted manuscript will add meaningful new information to the medical literature or will be redundant with information already disseminated with the posting of the preprint.
When submitting a manuscript for review, authors need to disclose preprints, databases, proceedings, or other preliminary communications or depositories.
However, abstracts, conferences, or personal communications need not be disclosed.
The policy states "Neither conference presentations nor posting on recognized preprint servers constitute prior publication," and an editorial explains: "Nature never wishes to stand in the way of communication between researchers.[...] Communication between researchers includes not only conferences but also preprint servers.
The Ar Xiv preprint server is the medium of choice for (mainly) physicists and astronomers who wish to share drafts of their papers with their colleagues, and with anyone else with sufficient time and knowledge to navigate it.
Authors in any of Mary Ann Liebert's 80 peer-reviewed journals (including The CRISPR Journal, Foodborne Pathogens and Disease, Human Gene Therapy, Stem Cells and Development, Tissue Engineering, and Zebrafish) may archive their preprint manuscripts (version prior to peer review) at any time without restrictions, including bio Rxiv, ar Xiv, and Chem Rxiv.
The Society's Licence to Publish requires that articles have not previously been published in part or in whole within a scientific journal, book or similar entity.
Deposition of a preprint version on the author's personal website, in an institutional repository, or in a recognized preprint archive (such as Bio Rxiv) is not viewed as prior publication, provided that: Authors should inform the journal at the time of submission if and where their article has been previously posted.
Authors are required to provide a link to the final published article (known as the Version of Record) alongside the original preprint version.