Schedule of Estimated Values of Warrants Valuation Assumptions

The weighted average estimated values of director and employee stock option grants, as well as the weighted average assumptions that were used in calculating such values during the twelve months ended December 31, 2016 and 2015, were based on estimates at the date of grant as follows:

	April 30,			January 1,			February 10,			December 6,
	2015 Grant			2016 Grant			2016 Grant			2016 Grant
Risk-free interest rate		1.43	%		1.76	%		1.15	%		1.84	%
Weighted average expected term		5 years			5 years			5 years			5 years
Expected volatility		143.10	%		134.18	%		132.97	%		123.82	%
Expected dividend yield		0.00	%		0.00	%		0.00	%		0.00	%

Schedule of Estimated Values of Warrants Valuation Assumptions

The estimated values of warrants, as well as the assumptions that were used in calculating such values were based on estimates at the issuance date as follows:

	Noteholders			Placement Agent
Risk-free interest rate		1.76	%		1.54	%
Weighted average expected term		5 years			5 years
Expected volatility		134.18	%		134.18	%
Expected dividend yield		0.00	%		0.00	%

Schedule of Estimated Values of Warrants Valuation Assumptions

The estimated values of warrants, as well as the assumptions that were used in calculating such values were based on estimates at the issuance date as follows:

	Bridge Noteholders			Placement Agent
Risk-free interest rate		1.83	%		1.93	%
Weighted average expected term		5 years			5 years
Expected volatility		123.94	%		123.07	%
Expected dividend yield		0.00	%		0.00	%