Response When Editor Remains Concerned after Author Responses

Dear [CORRESPONDING AUTHOR]:

Thank you for your further correspondence about this paper. We have investigated the matter as far as we are able and have not been able to resolve it satisfactorily.

In accordance with ethical guidelines and the policies of this journal, we are therefore asking your institution to investigate this matter further.

I am sending this letter to all authors listed on the manuscript. Until the investigation of this matter is concluded we will not be able to proceed further with review/publication of this paper.

Sincerely,