During the three and six months ended June 30, 2020, the Company paid interest on its nonconvertible promissory notes in the aggregate amount of $33,347 and $67,230, respectively. During the three and six months ended June 30, 2019, the Company paid interest on its nonconvertible promissory notes in the aggregate amount of $26,662 and $53,808, respectively. The Company had balances of $8,537 and $8,788 as of June 30, 2020 and December 31, 2019, respectively, for accrued interest recorded in its condensed consolidated balance sheets, relating to these nonconvertible promissory notes. The Company recorded interest expense for the three and six months ended June 30, 2020 of $33,220 and $66,979, respectively, and $26,497 and $53,532 for the three and six months ending June 30, 2019, respectively, relating to these nonconvertible promissory notes. As of June 30, 2020, the Company had a balance of $692,743 in current liabilities and $626,597 in noncurrent liabilities under the caption notes payable related to these nonconvertible promissory notes. As of December 31, 2019, the Company had balances of $288,237 in current liabilities and $1,074,122 in noncurrent liabilities on its condensed consolidated balance sheets under the caption notes payable relating to these nonconvertible promissory notes.