title: Timely arguments.
authors: S
authors: S
authors: Callahan
mesh_terms: D000028:Abortion, Induced; D033421:Beginning of Human Life; D001926:Brain Death; D004992:Ethics, Medical; D006803:Human Development; D006801:Humans; D019369:Life; D012297:Right to Die; D013727:Terminal Care / Q000592:standards*; D014481:United States; D026712:Value of Life