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PREPAID EXPENSES AND OTHER ASSETS
12 Months Ended
Dec. 31, 2021
PREPAID EXPENSES AND OTHER ASSETS  
PREPAID EXPENSES AND OTHER ASSETS

10.    PREPAID EXPENSES AND OTHER ASSETS

    

December 31, 

    

December 31, 

    

December 31, 

    

2021

    

2020

    

2019

Prepaid insurance

$

537,022

$

367,969

$

269,262

Deposits on rental agreements

 

103,688

 

128,680

 

119,660

Retainers for professional services

 

32,491

 

23,000

 

23,000

Other prepaid expenses and other assets

 

114,533

 

185,822

 

218,120

$

787,734

$

705,471

$

630,042