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Note 12 - Subsequent Events (Details Textual) - USD ($)	1 Months Ended	3 Months Ended		12 Months Ended
	Apr. 30, 2018	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2019
Conversion of Stock, Shares Converted		450
Conversion of Series D Preferred Stock Into Common Stock [Member]
Stock Issued During Period, Shares, New Issues		30,000,000
Conversion of Stock, Shares Converted		450
Conversion of Series D Preferred Stock Into Common Stock [Member] | Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues	10,000,000
Conversion of Stock, Shares Converted	150
Scenario, Forecast [Member]
Proceeds from Fast Track I/II Small Business Innovative Research Grant				$ 299,820

X

- Definition

Represents cash received from a Fast Track I/II Small Business Innovative Research grant.

+ References

No definition available.

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X

- Definition

The number of shares converted in a noncash (or part noncash) transaction. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

+ References

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