EXHIBIT 23.1

Consent of Independent Registered Public Accounting Firm

We hereby consent to the incorporation by reference in the Registration Statement on Form S-8 of our report dated April 1, 2019, with respect to the consolidated financial statements in the Annual Report on Form 10-K of the Company for the year ended December 31, 2018. Our report includes an explanatory paragraph about the existence of substantial doubt concerning the Company’s ability to continue as a going concern.

/s/ CITRIN COOPERMAN & COMPANY, LLP

New York, New York

May 22, 2019