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Accounts Payable and Accrued Expenses (Tables)
9 Months Ended
Feb. 28, 2019
Payables and Accruals [Abstract]  
Schedule of Accounts Payable and Accrued Liabilities [Table Text Block]

     

February 28,

2019

 May 31,

 2018

Accounts payable and accrued expenses

$

852,985

 

$

655,599

Deferred rent

 

36,717

 

31,357

Total              

$

889,702

 

$

686,956