I'm applying to allopathic medical schools this cycle. From the research I've done, I know that most of the schools I'm applying to require at least 3 references, one of which must be from a science professor. That being said, I was considering three professors and my supervisor who oversaw my volunteering in a medically-related field. Two of the three professors are science professors. The other is an international honors professor. I know who I ask is up to my discretion, but I'm getting mixed reviews. Some sources say I should submit more references to show "range," but I'm aiming for reference quality, not quantity. Any advice? Thanks!