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Organization and Summary of Significant Accounting Policies - Accounts Payable (Details) - USD ($) | Jun. 30, 2020 | Dec. 31, 2019
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Accounting Policies [Abstract] |  |
Research and development expenses | $ 1,050,481 | $ 766,001
Legal expenses | 5,903 | 26,994
Other | 87,577 | 150,383
Accounts payable | $ 1,143,961 | $ 943,378

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