Evolution of naturally arising SARS-CoV-2 defective interfering particles oleh Samer Girgis, Zaikun Xu, Spyros Oikonomopoulos, Alla D. Fedorova, Egor P. Tchesnokov, Calvin J. Gordon, T. Martin Schmeing, Matthias Götte, Nahum Sonenberg, Pavel V. Baranov, Jiannis Ragoussis, Tom C. Hobman, Jerry Pelletier