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Note 6 - Accrued Expenses
6 Months Ended
Jun. 30, 2017
Notes to Financial Statements  
Accounts Payable and Accrued Liabilities Disclosure [Text Block]
6.
Accrued Expenses
 
Accrued expenses as shown on the accompanying Condensed Consolidated Balance Sheets is composed of the following as of
June 30, 2017
and
December 31, 2016:
 
   
June 30,
2017
   
December 31,
2016
 
Accrued salaries
  $
351,268
    $
201,170
 
Accrued directors’ fees
   
133,370
     
78,070
 
Other
   
15,000
     
15,000
 
Total accrued expenses
  $
499,638
    $
294,240