Most excellent investigative work
As a research scientist (RJ Gyurik) of several decades in infectious diseases with success in the invention of the leading worldwide human anti-parasitic drug, albendazole, I concur with authors that the likelihood of the lab-leak of SARS-COV-2 which had been optimized for human transmission and high virulence in WI laboratory within China is of very high probability. bgyurik@comcast.net