4. Prepaid and Other Current Assets

12 Months Ended

Dec. 31, 2017

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Prepaid and Other Current Assets

Prepaid expenses and other current assets consisted of the following:

	Year Ended December 31,
	2017		2016
Prepaid expenses	$	219,074	$	199,066
Prepaid insurance		287,244		145,825
Rent deposits		68,196		28,047
Other assets		16,520		10,625
	$	591,034	$	383,563