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Other Receivables Other Receivables
 12 Months Ended
Dec. 31, 2018
Receivables [Abstract]  
Other Receivables Other receivables
Other receivables were comprised of the following: 
 
December 31,
 
2018
 
2017
Supplier rebates and non-trade receivables
$
334,156

 
$
295,292

Medicare bad debt claims
135,640

 
103,970

 
$
469,796

 
$
399,262