Substantial doubt about the company's ability to continue as a going concern.

“management concluded there continues to exist substantial doubt regarding the Company's ability to continue as a going concern. As a pre-revenue development stage company, the Company is dependent on debt and equity financing transactions to fund its continued development and operational activities. While the Company has continued to execute a number of financing transactions, as described in this footnote and Note 10-Equity, each of which have improved the Company's cash position, and while the Company continues to operate under a business plan that includes reductions in certain spending, management anticipates the need for additional financing to maintain its operations and carry out its business objectives. The receipt of potential funding cannot be considered probable at this time because these plans are not entirely within management's control as of the date of these condensed consolidated financial statements. Therefore, there exists substantial doubt regarding the Company's ability to continue as a going concern. Even if additional financing is successfully consummated, available liquidity may still not be sufficient to eliminate the aforementioned substantial doubt regarding the Company's ability to continue as a going concern.”