               

            

            

              

        

       1969  12  

          

        

        

         

        

         

    

1986  9         

        

   1990  9     

        

   1992  12    

        

  1995  9    

     1999  6  

        

  2000  6   Case Western Reserve

University         

 2016  9  2020  9     

        

   2020  5     

         2022

 8          

  