Consolidated Statements of Cash Flows - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating activities:
Net loss	$ (7,581,334)	$ (1,639,627)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization and depreciation	17,646	11,920
Non-cash lease expenses	32,731	29,652
Share-based compensation	63,691	79,573
Issuance of common stock for milestone	5,000,000
Issuance of common stock for services	59,000	57,600
Change in operating assets and liabilities:
Contracts and grants receivable	177,467	96,358
Prepaid expenses and other current assets	337,492	(54,139)
Research and development incentives receivable	(56,850)
Income tax receivable	(836,893)	(610,676)
Operating lease liability	(33,084)	(29,230)
Deferred revenue		104,963
Accounts payable and accrued expenses	379,544	(75,336)
Accrued compensation	(254,483)	(264,360)
Total adjustments	4,886,261	(653,676)
Net cash used in operating activities	(2,695,073)	(2,293,303)
Investing activities:
Purchases of office furniture and equipment	(7,147)
Net cash used in investing activities	(7,147)
Financing activities:
Proceeds from issuance of common stock pursuant to FBR At Market Issuance Sales Agreement	3,989,226	522,583
Costs associated with FBR At Market Issuance Sales Agreement	(157,291)	(15,729)
Proceeds from the exercise of warrants	685,384
Principal repayment - financing lease	(1,810)	(1,638)
Net cash provided by financing activities	4,515,509	505,216
Effect of exchange rate on cash and cash equivalents	(30,621)	4,641
Net increase (decrease) in cash and cash equivalents	1,782,668	(1,783,446)
Cash and cash equivalents at beginning of period	5,420,708	8,983,717
Cash and cash equivalents at end of period	7,203,376	7,200,271
Cash paid for lease liabilities:
Operating lease	35,650	34,875
Financing lease	2,136	2,136
Non-cash investing and financing activities:
Deferred issuance costs reclassified to additional-paid-in capital	17,430	3,653
Issuance of stock options, cash exercise price received December 2019	1,882
Present value of right-of-use assets and lease liabilities recognized on January 1, 2019		255,962
Accrued software development cost		30,690
Deferred issuance costs included in accounts payable		$ 3,148