The team requested raw patient data on the 174 cases of COVID-19 that China had identified from the early phase of the outbreak in Wuhan in December 2019, but were only provided with a summary.
Work to identify the origins of the coronavirus points to a natural reservoir in bats, but it is unlikely that they were in Wuhan.
"We should be commemorating his contribution to fighting the pandemic."
"Everybody knows how it really exploded out of Huanan market in Wuhan, but the key is what was happening around that time and before," Dwyer said.
Experts say the Huanan market still plays a role in tracing the origins of the virus, since the first cluster of cases was identified there.
The origin of COVID-19 has been highly politicized.
The world's first COVID-19 patient mysteriously went missing over a year ago. Now, the world is mounting pressure on China to disclose her whereabouts.
The study found that both lung and kidney function were impaired in certain patients.
Zhang shared recorded and shared livestream reports as well as written accounts of the novel coronavirus as it barreled throughout China.
The central Chinese city - where the global coronavirus pandemic began - allowed more than 2,800 educational institutions to start their new term on Tuesday.