Efficacy of the mRNA-1273 SARS-CoV-2 Vaccine at Completion of Blinded Phase - Sahly, H. M. El; Baden, L. R.; Essink, B.; Doblecki-lewis, S.; Martin, J. M.; Anderson, E. J.; Campbell, T. B.; Clark, J.; Jackson, L. A.; Fichtenbaum, C. J.; Kalil Filho, Jorge Elias (NEW ENGLAND JOURNAL OF MEDICINE, 2021)