How do I prepare for interviews?

You can prepare for interviews in many ways! The most reliable method in my opinion, however, is being asked questions. In order to be able to reply to a question in a way that seems structured but not rehearsed, you need to know exactly what your opinions are on a vast range of topics. That can only come from practice, especially with other people around you. That allows you to get feedback about how your opinion is coming across to an interviewer. Additionally, keeping relatively up to date on current affairs in the medical world is advisable. I remember one of my interview questions being what they thought would be the most promising field in the future, so being abreast of potential breakthroughs or certain issues that might present in the future is useful.