Quarterly report pursuant to Section 13 or 15(d)

2. Summary of Significant Accounting Policies (Details)

v3.19.2
2. Summary of Significant Accounting Policies (Details) - shares
6 Months Ended
Jun. 30, 2019
Jun. 30, 2018
Antidilutive shares excluded from EPS 77,948,350 47,595,157
Options [Member]    
Antidilutive shares excluded from EPS 39,450,603 37,301,300
Warrants [Member]    
Antidilutive shares excluded from EPS 25,713,204 5,006,355
Convertible Notes [Member]    
Antidilutive shares excluded from EPS 12,784,543 5,287,502