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SHORT TERM INVESTMENTS
3 Months Ended
Mar. 31, 2019
Cash and Cash Equivalents [Abstract]  
Short Term Investments [Text Block]
NOTE 4 - SHORT TERM INVESTMENTS
 
Short term investments on March 31, 2019 and December 31, 2018 include bank deposits bearing annual interest rates varying from 0.05% to 3.15%, with maturities of up to 8 months as of March 31, 2019 and December 31, 2018.