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

“Based on our recurring losses from operations incurred since inception, our expectation of continuing operating losses for the foreseeable future, negative operating cash flows for the foreseeable future, and the need to raise additional capital to finance its future operations, we have concluded that there is substantial doubt regarding our ability to continue as a going concern within one year after the date that our condensed consolidated financial statements, included in this Form 10-Q (such condensed consolidated financial statements, the "consolidated financial statements") are issued.”