Three Months Ended
March 31, 2020

Three Months Ended
March 31, 2019

Related party transaction included within interest expense:

Interest expense on promissory notes issued to relatives of the Chairman and Chief Executive Officer of the Company

$

78,792

$

74,782

Interest expense on lines of credit payable to the Chairman and Chief Executive Officer of the Company and his spouse

$

356,454

$

333,250

Related party transactions included within selling, general and administration expense:

Consulting fees to the Chairman and Chief Executive Officer of the Company accrued on the line of credit available to the Company

$

62,400

$

47,400

Stock-based compensation expense on the grant of stock options to a director of the Company

$

—

$

264,589

Related party transactions included within product development expense:

Consulting fees to a relative of the Chairman and Chief Executive Officer of the Company

$

30,000

$

—