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NOTE 10 – NET LOSS PER SHARE (Tables)
6 Months Ended
Jun. 30, 2020
Loss per share, basic and diluted:  
Schedule of calculation of diluted net loss per share allocable to common stockholders
   June 30, 2020   June 30, 2019 
Stock options   24,590,141    22,072,469 
Warrants   1,782,571    1,832,571 
Performance stock units   2,422,885     
Restricted stock units   6,029,957    1,040,000 
    34,825,554    24,945,040