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Summary of Significant Accounting Policies (Tables)
3 Months Ended
Mar. 31, 2021
Summary of Significant Accounting Policies  
Schedule of potential common shares, presented based on amounts outstanding at each period end, excluded from computation of diluted net loss per share attributable to common stockholders

March 31, 

    

    

2021

    

2020

Stock options

3,641,903

4,058,347

Restricted stock units

 

97,631

 

118,662

Potential common shares

3,739,534

4,177,009