Dear scientists,

I'm currently an MD student and I will graduate this year. I want to get a PhD scholarship (biomedicine major) to Korea, Japan, or the US to start my academic career.

I find some useful information in the internet. Nevertheless, I want to know more because I'm a little bit nervous. 

My main questions are "how many peer-reviewed articles a PhD student need to fulfill their course?" and "what does it depend on?".

I'm glad to hear your experience.

Thank you very much.