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Note 5 - Accrued Expenses and Other Current Liabilities | 12 Months Ended
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Dec. 31, 2019
Notes to Financial Statements |
Accounts Payable, Accrued Liabilities, and Other Liabilities Disclosure, Current [Text Block] | 5. Accrued Expenses and Other Current Liabilities Accrued expenses and other current liabilities consist of the following:
|  | December 31, |
|  | 2019 |  |  | 2018 |
Accrued payroll and payroll related expenses |  | $ | 182,708 |  |  | $ | 409,889 |
Accrued professional fees |  |  | 48,338 |  |  |  | 69,231 |
Accrued clinical studies expenses |  |  | 57,378 |  |  |  | 34,000 |
Other |  |  | 70,108 |  |  |  | 92,106 |
Total |  | $ | 358,532 |  |  | $ | 605,226 |

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- Definition The entire disclosure for accounts payable, accrued expenses, and other liabilities that are classified as current at the end of the reporting period. + References No definition available. + Details
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