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Note 4 - Accounts Payable and Accrued Expenses (Tables)
12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]
 
 
December 31,
2016
 
 
December 31,
2015
 
                 
Legal
  $
1,190
    $
186,936
 
Payroll and related
   
-
     
47,388
 
Patent expense
   
37,142
     
29,239
 
Research and development
   
116,255
     
8,128
 
Other
   
13,400
     
7,564
 
                 
    $
167,987
    $
279,255