I am always fascinated by good pronunciation. I insist on correct pronunciation . Incidentally, I was complimented by the BBC World news announcer for my good dictation and pronunciation. Now, you'd say how pronunciation is related to our medical sciences study? I'd say, it's definitely connected.
It shows your alertness and inquisitiveness to learn a foreign language . Among the two... American English and British English, I'd definitely recommend the British English . Love for correct pronunciation forces you to listen to the speakers more carefully, focusing on how they make the right sounds when they speak. By listening to how natural sentences sound, you are more likely to make them yourself and have more chances of success in an interview.