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Note 5 - Summary of Accrued Expenses (Details) - USD ($)
Jun. 30, 2016
Dec. 31, 2015
Accrued interest payable $ 0 $ 14,009
Accrued payroll and payroll related expenses 345,239 56,947
Accrued professional fees 47,285 327,950
Accrued clinical studies expenses 282,224 184,737
Other accrued expenses 67,130 38,026
Total $ 741,878 $ 621,669