"PNAS: Proceedings of National Academy of Sciences" . . "Proc. Natl. Acad. Sci. U.S.A." . . "Proceedings of the National Academy of Sciences)" . "1915" . "Proceedings of the National Academy of Sciences of the USA" . "Weekly" . "Proc. Natl. Acad. Sci. USA" . . . "the Proceedings of the National Academy of Sciences of the United States of America" . "P.N.A.S" . . . . "Proceedings of the NAS" . . "PNASA6" . . "Hybrid" . . . . "Proceedings of the National Academy of Sciences of the United States of America" . "PNAS" . . "Proceedings of the National Academy of Sciences (PNAS)" . . . "Proceedings of the National Academy of Science" . . "Proc Natl Acad Sci U S A" . . . "''Proceedings of the National Academy of Sciences''." . . . . "12.779" . "Proceedings of the National Academy of Sciences of the United States of America" . . "Proceedings of the National Academy of Sciences of the United States." . "Proceedings of the National Academy of Sciences." . "U.S. National Academy of Sciences" . "1091-6490" . . "Proceedings of the National Academia of Sciences" . . "''PNAS''" . . . "Delayed" . . . . . . "''Proceedings of the National Academy of Science''" . "0027-8424" . "Hybrid,delayed(after 6 months)" . "PNAS USA" . "2021" . "US National Academy of Sciences" . . . "43473694" . "Proceedings of the National Academy of Sciences" . "Proceedings of the National Academy of Sciences USA" . "Proc. Natl. Acad. Sci. U.S.A." . "Proceedings of the national academy of sciences" . "00278424" . "Proceeding of the National Academy of Sciences" . . . . . . "''Proceedings of the National Academy of Sciences''" . ":Proceedings of the National Academy of Sciences of the United States of America" . . "Proceedings of the National Academy" . . . . . . . . "Proceedings of the National Academy of Sciences, USA" . . . "16010069" .