The authors would like to acknowledge Matt Ardito and Annie De Groot of EpiVax, Inc. (Providence, Rhode Island) for providing the predictions that were used to synthesize the tetramers. None of the authors are affiliated with EpiVax, Inc. Epivax, Inc. had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript, aside from the above-mentioned contribution. The authors have declared that no competing interests exist.
Footnotes
No competing interests declared.
