Here is your letter...
To whom it may concern:
I interviewed at OSUCOM on (date) with Dr. X and Dr. Y. I came away from the interview with a great impression of the school, and I would be thrilled to be a part of it. I feel that my goals are in-line with the mission of the school (which is.... ???), and that the training I would receive as a student there would be outstanding.
If I am accepted, it is my intention to withdraw my application from consideration at all other schools to which I have applied. I have been fortunate enough to be in the position where I have some attractive options at this point, but I believe that the OSUCOM Bridge program is the right place for me to pursue a medical education. I hope your admissions committee feels the same way.
In any case, I understand that there are many qualified applicants for a limited number of spots, and I respect your decision, whatever it is. However, I want to make it clear that my intent is to matriculate to OSUCOM, if accepted.
Sincerely,
whatever your name is