Letters of Recommendation

Planning to apply to DR this year and I had a question regarding letters that I can use. I understand that I need 1 DR letter. However, I also can get 2 IR letters and a neurology letter. Would 2 IR letters be fine or should I use the neuro letter as well (1 IR +1 neuro)? I can get a medicine letter but I'd have to do another rotation.
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Radiology Source Type: forums