Here is the source article: https://www.nature.com/articles/s41564-020-00835-2
Relevant clinical trials:
https://clinicaltrials.gov/ct2/show/NCT04392219
https://clinicaltrials.gov/ct2/show/NCT04405739
Here is the source article: https://www.nature.com/articles/s41564-020-00835-2