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Equity Financings and Warrants (Tables)
12 Months Ended
Dec. 31, 2020
Equity [Abstract]  
Summary of Warrants by Year of Expiration

As of December 31, 2020, these warrants, by year of expiration, are summarized below:

 

Year of Expiration

 

Number

of Warrants

 

 

Weighted Average

Exercise Price

 

2022

 

 

133,401

 

 

$

109.80