The phrase "author certify" is not correct and does not convey a clear meaning in written English.
It may be intended to refer to an author certifying something, but it lacks proper grammatical structure.
Example: "The author must certify that the work is original and not plagiarized."
Alternatives: "author verification" or "author confirmation".
The author certifies that no human subjects nor animals were involved in the present study.
Each author certifies that all investigations were conducted in conformity with ethical principles of research.
Each author certifies that he has no commercial associations (e.g., consultancies, stock ownership, equity interest, patent/licencing arrangements, etc).
The corresponding author certifies that there is no actual or potential conflict of interest in relation to this article.
The author certifies that he has no commercial associations (e.g., consultancies, stock ownership, equity interest, patent/licensing arrangements, etc).
Each author certifies that he has no commercial associations (e.g., consultancies, stock ownership, equity interest, patent/licensing arrangements) that might pose a conflict of interest in connection with the submitted article.
The author certifies that he has no commercial associations (such as consultancies, stock ownership, equity interest and patent/licensing arrangements) that might pose a conflict of interest in connection with the submitted article.
Each author certifies that he or she has no commercial associations (e.g., consultancies, stock ownership, equity interest, and patent/licensing arrangements) that might pose a conflict of interest in connection with the submitted article.
Each author certifies that he or she, or a member of his or her immediate family, has no funding or commercial associations (e.g. consultancies, stock ownership, equity interest, patent/licensing arrangements, etc).
Furthermore, each author certifies that this material or similar material has not been and will not be submitted to or published in any other publication before its appearance in the Journal of Ophthalmic Inflammation and Infection.
