https://eastman.r-universe.dev/ncbithttps://eastman.r-universe.dev/api/packages/ncbithttps://eastman.r-universe.dev/ncbit/ncbit.pdfhttps://eastman.r-universe.dev/ncbit/doc/manual.htmlhttps://eastman.r-universe.dev/ncbit/citationhttps://eastman.r-universe.dev/ncbit/citation.txthttps://eastman.r-universe.dev/ncbit/citation.cff