The references 2, 3, and 4 do not exist, although they are mentioned in the reference list. How can it happen?
The reference list entries has been worked out by ChatGPT, which generated or edited this reference list.
Many of the authors in this reference list, who are famous research integrity experts, have openly declared that they didn’t write such papers.
P.S. This reference list and the paper have been actively discussed on PubPeer.
https://pubpeer.com/publications/093D9AEBD8505660A5BE344266A73E