Dr's Glam Asst ~~ We know that, but the pedantry has been overtaken by a sort of folklore; deliberately engineered by the originators of the series title, I should say.

My late wife Valerie spent a few days in hospital once, where there was a Chinese houseman called Dr Hu. Every time the call came over the tannoy for "Dr Hu", all the ladies in the ward would shout in chorus "And the Daleks".

~M~