Note 5 — Accrued Expenses and Other Current Liabilities

Accrued expenses and other current liabilities consisted of the following as of:

The accrued bonus as of December 31, 2018 and 2017 represents the guaranteed bonus payment to the Company’s Chief Executive Officer (“CEO”) under the CEO Employment Agreement and discretionary bonus payments to the CEO and other employees.

The Company’s CEO agreed to the payment of a reduced salary of $4,200 per month for the period July 1, 2017 through January 31, 2018, with such earned but unpaid salary to be paid to the CEO only upon the Senior Secured Note first being repaid-in-full. The earned but unpaid salary has been recognized as an accrued salary expense liability of $145,937 and $125,088 as of December 31, 2018 and December 31, 2017, respectively. The accrued CEO payroll was subsequently paid in January 2019 upon the Senior Secured Note being repaid-in-full on December 27, 2018 concurrent with the issue of the Senior Secured Convertible Note. See Note 12 — Debt, for a discussion of each of the “Senior Secured Convertible Note” and the “Senior Secured Note”.

The unpaid board of director fees as of December 31, 2018, of $61,250 included in accounts payable, and the fees as of December 31, 2017 included in accrued expense, each represent amounts payable to all non-executive members of the board of directors, including, as of December 31, 2017, $10,000 payable to each of two former board members each previously deemed to be a related party.

The EsoCheck™ License Agreement fee is the remaining unpaid balance of such fee incurred in connection with the EsoCheck™ License Agreement, as discussed in Note 7, Agreements Related to Acquired Intellectual Property Rights.