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Note 6 - Accrued Expenses | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 | Dec. 31, 2016
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 March 31, 2017 and December 31, 2016:
|  | 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 |
| 4. Accrued Expenses Accrued expenses as shown on the accompanying Consolidated Balance Sheets is composed of the following as of December 31, 2016 and 2015:
|  | 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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- Definition The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a),20,24) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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