Study registration: *
Publication Pilishvili T, NEJM, 2021
Dates: 2020-12-14 to 2021-05-19
Funding: Public/non profit (Centers for Disease Control and Prevention )
Conflict of interest: no COI (First and last authors disclosure forms: Are there other relationships or activities that readers could perceive to have influenced, or that give the appearance of potentially influencing, what you wrote in the submitted work? No. In the large writing group only a handful of authors (not first or last authors) had any conflicts to disclose.)