1\cite{Hilgers_2016} \cite{Shoshi_2018} 
2     3-5\cite{Feinstein1970}   \cite{Su2016} \cite{Prosser2010}
3     6-9   \cite{Stebbings1972}   \cite{Frangogiannis2008}  \cite{Cazzola_2010} \cite{Y_ez_2018} \cite{Adams_2006}  
4   10-13 \cite{DiMasi2003} \cite{Munos2009} \cite{Langhauser_2018} \cite{Uszczynska-Ratajczak2018}
5   14-18   \cite{Booton2014} \cite{Vencken2015} \cite{Murakami2015,Sekar2019} 
6    19 - \cite{Drevytska_2018} \cite{Shoshi_2018}  \cite{Saik_2018}    \cite{Hamzeiy_2017}