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Clinical Holdback
 3 Months Ended
Mar. 31, 2022
Clinical Holdback [Abstract]  
Clinical Holdback
(5)
Clinical Holdback
 
The following table shows the activity within the clinical holdback liability accounts for the three months ended March 31, 2022:
 
Balance at December 31, 2021
  
$
168,738
  
Clinical holdback retained
    
4,023
  
Clinical holdback paid
    
(34,021
)
Balance at March 31, 2022
  
$
138,740
  
Less: clinical holdback - current portion
    
(36,238
)
Clinical holdback - long-term portion
  
$
102,502