| 
              1.
             | 
            
              1991
             | 
            
              
                ASCVTS (Asian Society for Cardiovascular and Thoracic Surgery)
                
                
              
             | 
          
          
            | 
              2.
             | 
            
              2003~
             | 
            
              
              ∟ Assistant Secretary-General
                
              
             | 
          
          
            | 
              3.
             | 
            
              
             | 
            
              
                AATS (American Association for Thoracic Surgery)
                
                
              
             | 
          
          
            | 
              4.
             | 
            
              
             | 
            
              
                EACTS (European Association for Cardio-Thoracic Surgery)
                
                
              
             | 
          
          
            | 
              5.
             | 
            
              
             | 
            
              
                STS (Society for Thoracic Surgery)
                
                
              
             | 
          
          
            | 
              6.
             | 
            
              2015~
             | 
            
              
              ∟ Workforce of STS National Database
                
              
             |