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v3.19.3.a.u2

Summary of Significant Accounting Policies (Detail Textuals) | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2018 USD ($) segment | Sep. 30, 2019 USD ($) | Sep. 30, 2018 USD ($) | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($)
Property, Plant and Equipment [Line Items] |  |  |  |  |
Restricted cash | $ 4,512 | $ 4,512 | $ 4,502 | $ 4,428 |
Property, plant and equipment, depreciation methods | straight-line method |  |  |  |
Number of reportable segments | segment | 1 |  |  |  |
Fair value of advance under credit agreement | $ 3,176,824 | 8,247,319 |  |  |
Carrying value of total convertible debt - related party |  | $ 3,296,249 |  |  |
Minimum |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Estimated useful life | 2 years |  |  |  |
Maximum |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Estimated useful life | 3 years |  |  |  |

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