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\title{Response to Referees' Comments}
\author{}
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\begin{document}
\maketitle
We are grateful for the referees' comments (blue) and have responded to the detracting points as follows:

\section*{Referee 1}

\begin{enumerate}
\item  {\color{blue}   }

\item  {\color{blue}   }

\item  {\color{blue}   }

\item  {\color{blue}   }

\item  {\color{blue}   }

\item  {\color{blue}   }

\item  {\color{blue}   }

\end{enumerate}

\section*{Referee 2}

\begin{enumerate}
\item  {\color{blue}   }

\item  {\color{blue}   }

\item  {\color{blue}   }

\item  {\color{blue}   }

\item  {\color{blue}   }

\item  {\color{blue}   }

\item  {\color{blue}   }

\end{enumerate}


\section*{Referee 3}

\begin{enumerate}
\item  {\color{blue}   }

\item  {\color{blue}   }

\item  {\color{blue}   }

\item  {\color{blue}   }

\item  {\color{blue}   }

\item  {\color{blue}   }

\item  {\color{blue}   }

\end{enumerate}

We hope that with these revisions, the paper is considered acceptable for publication and look forward to hearing from you.

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\end{document}  