Quarterly report pursuant to Section 13 or 15(d)

Note 9 - Accrued Liabilities - Accrued Liabilities (Details)

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Note 9 - Accrued Liabilities - Accrued Liabilities (Details) - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Accrued compensation and related $ 224 $ 417
Accrued clinical study costs 228 292
Accrued research and other professional fees 138 65
Accrued taxes and other liabilities 40 34
Total accrued liabilities $ 630 $ 808