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Consolidated Statement of Stockholders' Equity (Parentheticals)
12 Months Ended
Dec. 31, 2020
USD ($)
$ / shares
shares
Shares issued, offering cost | $ $ 762,875
Shares issued, offering cost per share (in dollars per share) | $ / shares $ 5.00
Prefunded warrants, transferred to equity (in shares) | shares 515,000