RIGHTS STATEMENT PAGE
CCBY appended to the DOI means Creative Commons BY license.
CCBYNCND appended to the DOI means Creative Commons BY-NC-ND license.
A normal DOI with neither term at the end means that the Open Access article is free to all readers, but all rights are reserved.
Creative Commons information can be found here.
For further info on MSA's policies, including article processing fee, please link here.