I applied through college or university. The process took 1 day. I interviewed at Boston Children's Hospital (Boston, MA) in Mar 2016
Interview
He sent me some of his group papers. and also asked me to send him my previous papers. we had an introduction tell interview and one in-person interview. I did not have a presentation for them, but it's typical for them to let you present your previous work for their group.
Interview questions [1]
Question 1
He asked me about my previous works on medical image processing. Also some questions about Linux