After submitting AMCAS and designating the regular MD program for all of my 22 schools, I've now decided I'd like to apply to the combined MD/MPH program at the schools that offer it. That would mean changing the program option on 12 schools. Can I / Should I do this before my application is processed? Since I'm sending paper copies of AMCAS to a bunch of the schools on my list (those who've solicited them, plus those who have their secondaries/supplementals on-line), without the school designation information, I was thinking I could just include a letter with those, saying which program I'm applying to. Any thoughts?