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Equity (Tables)
6 Months Ended
Jun. 30, 2020
Equity [Abstract]  
Reconciliation of Transactions Under the ATM and Purchase Agreement
Following is a reconciliation of the common stock transactions under the 2019 Sales Agreement and the 2018 Sales Agreement for six months ended June 30, 2020, and 2019, respectively:
 
Six Months Ended
 
Six Months Ended
 
June 30, 2020
 
June 30, 2019
Number of shares sold
638,511

 
2,032,345

 
 
 
 
Gross cash proceeds
$
242,621

 
$
1,738,319

Fees
50,070

 
459,978

Net proceeds
$
192,551

 
$
1,278,341

 
 
 
 
Average price per share
$
0.38

 
$
0.86