WHO COVID-19 origins report: What are WHO’s four theories on the emergence of SARS-CoV-2?

A joint statement by 14 countries states that they don't believe the conditions under which the report was written was "independent and objective".

from http://www.firstpost.com/tech/science/who-covid-19-origins-report-what-are-whos-four-theories-on-the-emergence-of-sars-cov-2-9487721.html