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Significant Accounting Policies (Tables)
6 Months Ended
Jun. 30, 2022
Accounting Policies [Abstract]  
Schedule of Estimate Fair Value of Stock Options Granted

The following assumptions were used to estimate the fair value of stock options granted during the six months ended June 30, 2022 and 2021 using the Black-Scholes option pricing model:

 

2022

 

2021

 

 

Risk-free interest rate

1.18%-1.83%

 

0.37%- 0.62%

 

 

Expected life (years)

6.25

 

6.25

 

 

Expected volatility

113.0% - 115.0%

 

92.4%

 

 

Dividend rate

0%

 

0%