If you search for @doctor in DIgiTrad, you'll get 13 hits. If you search for songs that mention "doctor" or "doctors" you'll get well over 100. Not to mention gems like Our Baby Died Last Night. And all of the variations of The Unfortunate Rake that have our hero perishing of syphilis, or white mercury (a cure for syphilis) or pila cotia (Latin for white mercury).