Quarterly report pursuant to Section 13 or 15(d)

2. Summary of Significant Accounting Policies (Details)

v3.20.2
2. Summary of Significant Accounting Policies (Details) - shares
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Antidilutive shares excluded from EPS 62,694,086 77,948,350
Options [Member]    
Antidilutive shares excluded from EPS 42,440,601 39,450,603
Warrants [Member]    
Antidilutive shares excluded from EPS 8,004,395 25,713,204
Convertible Notes [Member]    
Antidilutive shares excluded from EPS 12,249,090 12,784,543