Note 4 - Balance Sheet Components

12 Months Ended

Dec. 31, 2013

Disclosure Text Block Supplement [Abstract]

Supplemental Balance Sheet Disclosures [Text Block]

4. Balance Sheet Components

Property and Equipment, Net

	2012			2013
Medical equipment	$	215,639		$	276,443
Computer equipment		30,871			32,143
Furniture and fixtures		13,293			13,293
		259,803			321,879
Less: Accumulated depreciation and amortization		(131,176	)		(194,355	)
Net property and equipment	$	128,627		$	127,524

Depreciation and amortization expense for the years ended December 31, 2012 and 2013 and for the cumulative period from September 21, 2005 (date of inception) to December 31, 2013 was $57,173, $66,120 and $239,475, respectively.

Accrued Liabilities

	2012		2013
Accrued settlement related costs	$	263,560	$	-
Accrued interest		8,987		312,075
Accrued severence pay		-		58,846
Accrued vacation		54,153		81,499
Accrued loan restructuring fees		-		27,288
Deferred rent		18,034		15,284
Other accruals		910		21,160
Total accrued liabilities	$	345,644	$	516,152