Accrued Expenses and other payables (Schedule of Accrued Expenses) (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Accrued Liabilities, Current [Abstract]
Accrued clinical trial and other expenses	$ 811,728	$ 580,218
Compensation and related benefits	34,160	642,532
Deferred rent	31,775	42,423
Patent fees	35,000	40,000
Other expenses related to Pelican acquisition	82,301
Accrued expenses	$ 994,964	$ 1,305,173