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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
 3 Months Ended 12 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Operating activities:      
Net loss $ (4,014,194) $ (5,137,319)  
Adjustments to reconcile net loss to net cash used in operating activities:      
Depreciation and amortization 20,528 19,242  
Stock-based compensation expense 190,424 565,432  
Other non-cash items (200,146) (122,237)  
Changes in operating assets and liabilities:      
Prepaid expenses and other assets (298,468) (549,635)  
Accounts payable and other liabilities 703,593 1,057,567  
Defined benefit pension plan (30,118) 4,715  
Deferred income 41,798 (55,180)  
Total changes in operating assets and liabilities 416,805 457,467  
Cash used in operating activities (3,586,583) (4,217,415)  
Cash flows from investing activities:      
Purchase of property and equipment and internal use of software   (11,045)  
Purchases of marketable securities   (1,956,350)  
Maturity of marketable securities 3,018,750 4,074,375  
Cash provided by/(used in) investing activities 3,018,750 2,106,980  
Cash flows from financing activities:      
Net proceeds from issuance of shares in at-the-market (ATM) offering (Note 13)   770,520  
Net proceeds from the exercise of Warrants (Note 13) 100,225    
Net proceeds from the exercise of Stock Options (Note 14) 57,711    
Payments of offering costs (Note 13) (280,867)    
Payments of current portion of long-term debt (Note 11) (22,872) (21,612)  
Cash provided by/(used in) financing activities (145,803) 748,908  
Effect of exchange rate changes (442,503) 38,422  
Net increase/(decrease) in cash, cash equivalents and restricted cash (1,156,139) (1,323,105)  
Cash, cash equivalents and restricted cash at beginning of period 11,828,970 7,342,429 $ 7,342,429
Cash, cash equivalents and restricted cash at end of period $ 10,672,831 $ 6,019,324 $ 11,828,970