And to remind the prospective doctors that they are not gods in everyone's eyes:

From Nottingham Ale:

And you doctors who more execution have done
with powder and potion and bolus and pill . .

From 'A Pint of Old Peculier':

Forswear I say their physics all,
let no such doctors rule 'yer
The one true cure, the nostrum sure,
A pint of Old Peculier

Also from 'Delia's Gone':

Sent for the Doctor, doctor came too late,
Sent for the minister to lay out Delia straight

Nogs (MD)