I'm a bit confused on how the process works- I'm doing research in a lab outside the country over the summer and I was planning on getting a letter of rec from the PI. Firstly, do medical schools accept foreign letters of recommendation? And should I ask the letter writer to give me a hard copy that I then mail to AMCAS the following year or should I use a service like interfolio to save the letter (which costs money). Any help would be very appreciated thanks!