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General and Administrative Expenses
12 Months Ended
Dec. 31, 2019
General And Administrative Expense [Abstract]  
General and Administrative Expenses

19. General and Administrative Expenses

General and administrative expenses are comprised of the following items:

 

 

 

Year ended December 31,

 

 

 

2019

 

 

2018

 

 

2017

 

Salaries and benefits

 

$

39,565

 

 

$

11,721

 

 

$

3,717

 

Professional fees

 

 

21,189

 

 

 

7,557

 

 

 

1,715

 

Travel expenses

 

 

4,565

 

 

 

2,031

 

 

 

287

 

Other expenses

 

 

16,649

 

 

 

8,152

 

 

 

1,780

 

Total

 

$

81,968

 

 

$

29,461

 

 

$

7,499