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Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($)
Sep. 30, 2023
Jun. 30, 2023
Mar. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Assets [Abstract]            
Cash and cash equivalents $ 12,687,041     $ 27,612,732 $ 11,423,870  
Prepaid expenses 2,113,249     1,325,998 156,240  
Total current assets 14,800,290     28,938,730 11,629,116  
Property and equipment, net 212,953     234,912 156,938  
Other assets 1,187,788     2,174,286 11,010  
Total assets 16,201,031     31,347,928 11,797,064  
Current liabilities:            
Accounts payable 4,213,295     1,747,682 2,057,534  
Accrued expenses 2,868,390     3,000,212 3,377,826  
Total current liabilities 7,081,685     4,747,894 5,435,360  
Equity [Abstract]            
Common stock, $.001 par value: Authorized shares – 600,000,000 Issued and outstanding shares – 26,695,287 and 26,334,953 at September 30, 2023 and December 31, 2022, respectively 26,695     26,335 6,382  
Additional paid-in capital 105,864,028     104,970,722 68,731,220  
Accumulated deficit (96,771,377)     (78,397,023) (64,375,898)  
Total stockholders’ equity 9,119,346 $ 17,163,550 $ 22,865,157 26,600,034 4,361,704 $ 9,568,852
Total liabilities and stockholders’ equity $ 16,201,031     $ 31,347,928 $ 11,797,064