All articles published by Hong Kong Guokang Future Publishing House Co., Limited are made quickly available worldwide under an open access license. This means:
No special permission is required to reuse all or part of an article published by Hong Kong Guokang Future Publishing House Co., Limited, including figures and tables. For articles published under an Attribution 4.0 International License (CC BY 4.0), any part of the article may be reused without permission provided that the original article is clearly cited. Reuse of an article does not imply endorsement by the authors or Hong Kong Guokang Future Publishing House Co., Limited. Furthermore, no special permission is required for authors to submit their work to external repositories. This policy extends to all versions of a paper: submitted, accepted, and published.
For more information about the concept of open access, please refer to external sources: