7
Source?
Dynamics of natural selection preceding human viral epidemics and pandemic. Jennifer Havens et all.
The evidence remains clear: SARS-CoV-2 emerged via the wildlife trade. Robert F. Garry
The origins of COVID‐19 pandemic: A brief overview. Ying-Jian Hao et All.
The origins of SARS-CoV-2: A critical review. Edward Holmes et All.
Gain-of-function and origin of Covid-19 Patrick Berche.
Anything else you need?