Annual report pursuant to Section 13 and 15(d)

Accounts Receivable

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Accounts Receivable
 12 Months Ended
Dec. 31, 2015
Receivables [Abstract]  
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
Note 3 — Accounts Receivable
 
Accounts receivable, net consisted of the following:
 
 
 
December 31,
 
 
 
2015
 
2014
 
Trade receivables
 
$
803,599
 
$
231,412
 
Grant receivables
 
 
—
 
 
132,227
 
Other receivables
 
 
84,420
 
 
107,657
 
 
 
 
888,019
 
 
471,296
 
Allowance for doubtful accounts
 
 
(15,145)
 
 
(24,775)
 
 
 
$
872,874
 
$
446,521