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Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (2,654,898)	$ (3,299,551)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	176,034	183,077
Stock-based compensation expense	513,824	168,160
Provision for doubtful accounts	23,305	5,925
Deferred rent		(5,601)
Changes in assets and liabilities:
(Increase) decrease in accounts receivable	(424,338)	11,999
Decrease in inventory	8,348	1,493
(Increase) in other current assets	(189,754)	(186,901)
Decrease in other assets	1,964	57,439
Increase in accounts payable and accrued expenses	490,696	48,828
(Decrease) in deferred revenue	(34,868)	(33,760)
(Decrease) in other long-term liabilities		(158,407)
Net cash used in operating activities	(2,089,687)	(3,207,299)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(16,539)	(132,042)
Collection of note receivable	31,432	30,203
Net cash provided by (used in) investing activities	14,893	(101,839)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net proceeds from issuance of common stock from exercise of stock options	63,250	687,521
Net proceeds from issuance of common stock from exercise of warrants	392,854
Net cash provided by financing activities	456,104	687,521
Net decrease in cash	(1,618,690)	(2,621,617)
CASH, beginning of period	4,376,017	8,010,161
CASH, end of period	$ 2,757,327	$ 5,388,544

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