EXHIBIT 11
| Three Months Ended
September 30, |
Nine Months Ended
September 30, |
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| 1999 | 1998 | 1999 | 1998 | ||||||
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| Net loss | $(5,147,393 | ) | $(4,511,685 | ) | $(18,279,463 | ) | $(10,178,215 | ) | |
| Preferred dividends | -- | -- | -- | (508,435 | ) | ||||
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| Net loss attributable to common stockholders | $(5,147,393 | ) | $(4,511,685 | ) | $(18,279,463 | ) | $(10,686,650 | ) | |
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| Basic and diluted net loss per share attributable to | |||||||||
| common stockholders | $ (0.37 | ) | $ (0.34 | ) | $ (1.34 | ) | $ (0.90 | ) | |
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| Weighted average number of shares used in computing | |||||||||
| basic and diluted net loss per share attributable to | |||||||||
| common stockholders | 13,998,362 | 13,203,058 | 13,614,835 | 11,831,393 | |||||
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