Accounts payable and accrued liabilities (Tables)

12 Months Ended

Dec. 31, 2014

Payables and Accruals [Abstract]

Schedule of Accounts Payable and Accrued Liabilities

	DECEMBER 31, 2014		DECEMBER 31, 2013
Trade accounts payable	$	734,192	$	599,833
Accrued clinical trial fees		3,751,872		565,170
Accrued compensation and vacation		382,254		247,667
Accrued professional fees		247,471		890,248
Other accruals		87,519		47,742
	$	5,203,308	$	2,350,660