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Note 6 - Accrued Expenses (Tables) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 | Dec. 31, 2016
Notes Tables |  |
Schedule of Accrued Liabilities [Table Text Block] |
|  | March 31, 2017 |  |  | December 31, 2016 |
Accrued salaries |  | $ | 276,220 |  |  | $ | 201,170 |
Accrued directors’ fees |  |  | 105,769 |  |  |  | 78,070 |
Other |  |  | 15,000 |  |  |  | 15,000 |
Total accrued expenses |  | $ | 396,989 |  |  | $ | 294,240 |
|  | 2016 |  |  | 2015 |
Accrued compensation |  | $ | 201,170 |  |  | $ | 1,305 |
Accrued directors’ fees |  |  | 78,070 |  |  |  | - |
Other accrued expenses |  |  | 15,000 |  |  |  | 24,750 |
Total accrued expenses |  | $ | 294,240 |  |  | $ | 26,055 |

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