The protocol and any changes to the protocol, report files (copies), source files of participants who gave consent, and all other documents and correspondence related to the research will be archived in accordance with good clinical practices for a period of 15 years following the end of the research. The original informed consent forms of participants will be archived for a period of 30 years following the end of the research.
Copyright and License information: The Author(s). ©2018 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
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