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Note 6 - Receivables from an Unrelated Party, Prepaid Expenses and Other Receivables (Tables)
3 Months Ended
Mar. 31, 2018
Receivables [Abstract]  
Schedule of Other Current Assets [Table Text Block]
Prepaid Expenses and Other Receivables consisted of the following at March 31, 2018 and December 31, 2017:

 
 
March 31, 2018
   
December 31, 2017
 
 
           
Prepaid expenses
 
$
115,126
   
$
198,485
 
Other receivables
   
56,071
     
34,450
 
Total
 
$
171,197
   
$
232,935