https://bgcarlisle.r-universe.dev/pubmedtkhttps://bgcarlisle.r-universe.dev/api/packages/pubmedtkhttps://bgcarlisle.r-universe.dev/pubmedtk/pubmedtk.pdfhttps://bgcarlisle.r-universe.dev/pubmedtk/doc/manual.htmlhttps://bgcarlisle.r-universe.dev/pubmedtk/NEWShttps://bgcarlisle.r-universe.dev/pubmedtk/NEWS.txthttps://bgcarlisle.r-universe.dev/pubmedtk/citationhttps://bgcarlisle.r-universe.dev/pubmedtk/citation.txthttps://bgcarlisle.r-universe.dev/pubmedtk/citation.cff