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Capital structure (Tables)
3 Months Ended
Mar. 31, 2014
Capital structure  
Summary of the Company's outstanding warrants

 

 

 

 

Warrant
shares

 

Exercise
price

 

Expiration

 

Common stock

 

1,428

 

$

128.00

 

2014

 

Common stock

 

6,250

 

$

128.00

 

2017

 

Common stock

 

7,030

 

$

128.00

 

2019 and 2020

 

Common stock

 

452

 

$

2,520.00

 

2014