Stockholders' Equity (Deficit) (Tables)

12 Months Ended

Dec. 31, 2019

Stockholders' Equity (Deficit) [Abstract]

Assumptions Used to Value Warrants Granted

At March 13, 2019, Private PDS estimated the fair value of the warrant using the Black-Scholes option pricing model utilizing the following assumptions. Private PDS determined the expected stock price volatility based on volatilities of a peer group of similar companies in the biotechnology industry whose share prices are publicly available. The expected term of the warrant was based on the contractual term. The risk-free interest rate was based on the U.S. Treasury yield curve at the time of the grant over the term of the warrant grant. The expected dividend rate is based on the fact that the Company has never paid cash dividends and has no present intention to pay cash dividends.

Volatility		83	%
Risk-Free Interest Rate		2.63	%
Expected Term in Years		10
Dividend Rate		0.00	%
Fair Value of Warrant	$	8.23