Basis of Presentation (Tables)

3 Months Ended

Mar. 31, 2020

Basis of Presentation

Schedule of anti-dilutive securities

	March 31,
	2020	2019
Stock options	46	208
Subordinated convertible debentures	—	98,567
Convertible preferred stock	1,288	1,288
Warrants	8,342,428	127,540