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Accrued Expenses (Tables)
6 Months Ended
Jun. 30, 2020
Accrued Expenses  
Schedule of accrued expenses

June 30, 

December 31, 

    

2020

    

2019

Research and development costs

$

5,271

$

8,059

Professional fees

 

1,118

 

1,439

Payroll related

 

3,091

 

3,655

Other

 

160

 

377

Accrued expenses

$

9,640

$

13,530