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ACCRUED EXPENSES | 12 Months Ended
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Dec. 31, 2020
ACCRUED EXPENSES |
ACCRUED EXPENSES | 5. ACCRUED EXPENSES Accounts payable and accrued liabilities approximately consist of the following:
|  | 2020 |  | 2019
Incentive compensation |  | $ | 850,000 |  | $ | 395,000
Accounts payable |  |  | 1,429,000 |  |  | 1,278,000
Clinical study costs |  |  | 787,000 |  |  | 720,000
Professional fees |  |  | 221,000 |  |  | 157,000
Insurance |  |  | — |  |  | 111,000
Other |  |  | 156,000 |  |  | 3,000
|  | $ | 3,443,000 |  | $ | 2,664,000

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