to get admission through FMGE then the candidate must be a indian citizen or overseas citizen of india. candidate must requisite primary medical qualification fron the known medical institute, publishes by the world health organisation. and to eligible for FMGE entrance exam held in june candidate must recieve their primary medical qualification degree on or beofre may 31, 2018. 

to get admission for PG in aiims for foreign university you need to go for entrancee exam first and have to clear that exam to get seat.

i hope this informations helps you. all the best have a great future ahead.