Accrued expenses consisted of the following at March 31, 2019 and December 31, 2018:
2019
2018
Payroll and related
$
518,074
1,136,808
Commissions and royalties
52,095
113,462
Professional fees
39,948
23,135
Other
31,275
22,165
Total accrued expenses
641,392
1,295,570
No definition available.
Tabular disclosure of the components of accrued liabilities.