Quarterly report pursuant to Section 13 or 15(d)

2. Summary of Significant Accounting Policies (Details)

v3.20.1
2. Summary of Significant Accounting Policies (Details) - shares
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Antidilutive shares excluded from EPS 52,786,157 76,872,402
Options [Member]    
Antidilutive shares excluded from EPS 42,390,601 39,711,022
Warrants [Member]    
Antidilutive shares excluded from EPS 6,749,883 26,102,430
Convertible Notes [Member]    
Antidilutive shares excluded from EPS 3,645,673 11,058,950