Net loss per common share

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Net loss per common share

14. Net loss per common share

For the three months ended March 31, 2020 and 2019, the following common stock equivalents were excluded from the computation of diluted net loss per share as the results would have been anti-dilutive.

	Three months ended March 31, 2020		Three months ended March 31, 2019
Stock options		—		480,000
Warrants to purchase shares of common stock		154,455,397,549		111,197,591
Convertible notes		48,756,889,839		83,671,069
		203,212,287,388		195,348,660