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Selling, general and administrative expenses | 6 Months Ended
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Jun. 30, 2021
Selling, General and Administrative Expense [Abstract] |
Selling, general and administrative expenses | Selling, general and administrative expenses Selling, general and administrative expenses consisted of the following for the three and six months ended June 30, 2021 and 2020:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Personnel expenses | $ | 27,081 |  |  | $ | 22,461 |  |  | $ | 53,336 |  |  | $ | 49,382 |
Share-based compensation | 26,060 |  |  | 14,752 |  |  | 41,986 |  |  | 32,509 |
Professional services | 7,674 |  |  | 5,814 |  |  | 14,242 |  |  | 11,503 |
Office expenses | 3,726 |  |  | 3,082 |  |  | 6,948 |  |  | 6,482 |
Travel expenses | 1,054 |  |  | 1,487 |  |  | 1,656 |  |  | 5,280 |
Other expenses | 7,476 |  |  | 5,317 |  |  | 12,254 |  |  | 12,341 |
| $ | 73,071 |  |  | $ | 52,913 |  |  | $ | 130,422 |  |  | $ | 117,497 |

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- Definition The entire disclosure for selling, general and administrative expenses. + References No definition available. + Details
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- References No definition available. + Details
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