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Note 9 - Accrued Expenses and Other Current Liabilities | 12 Months Ended
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Dec. 31, 2018
Notes to Financial Statements |
Accrued Liabilities and Other Current Liabilities Disclosure [Text Block] |
( 9 ) | Accrued Expenses and Other Current Liabilities
Accrued expenses and other current liabilities consisted of the following (in thousands):
|  | December 31, |
|  | 2018 |  |  | 2017 |
Accrued expenses |  | $ | 495 |  |  | $ | 465 |
Accrued clinical trial costs |  |  | 276 |  |  |  | 74 |
Grant liability |  |  | 645 |  |  |  | 663 |
Customer deposits |  |  | 112 |  |  |  | 61 |
Total |  | $ | 1,528 |  |  | $ | 1,263 |

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