They said this on their secondary application so...
"If your school has an established pre-medical committee, your letter must come from them. The Admissions Committee policy is that students who attend schools that have formal pre-med advisors or premed committees must have a letter from that advisor or committee. Failure to provide this letter can be considered grounds for not pursuing the file further or for evaluating the candidate as less competitive than others. The committee believes those students whose undergraduate institution provides such a service is better able to evaluate the candidate in the context of that school’s entire applicant pool. They also believe that students who have not availed themselves of the service may be less well prepared for medical education than those who have participated."
