Annual report pursuant to Section 13 and 15(d)

Accrued Expenses and other accrued liabilities (Details)

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Accrued Expenses and other accrued liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Payables and Accruals [Abstract]    
Accrued payroll $ 250 $ 84
Accrued clinical testing 320 238
Accrued license fees and SRA 260 157
Accrued legal and professional fees 50 66
Accrued board expenses 0 91
Accrued other 22 14
Total accrued expenses and other liabilities $ 902 $ 650