https://certe-medical-epidemiology.r-universe.dev/msgxtractrhttps://certe-medical-epidemiology.r-universe.dev/api/packages/msgxtractrhttps://certe-medical-epidemiology.r-universe.dev/msgxtractr/msgxtractr.pdfhttps://certe-medical-epidemiology.r-universe.dev/msgxtractr/doc/manual.htmlhttps://certe-medical-epidemiology.r-universe.dev/msgxtractr/NEWShttps://certe-medical-epidemiology.r-universe.dev/msgxtractr/NEWS.txthttps://certe-medical-epidemiology.r-universe.dev/msgxtractr/citationhttps://certe-medical-epidemiology.r-universe.dev/msgxtractr/citation.txthttps://certe-medical-epidemiology.r-universe.dev/msgxtractr/citation.cff