I've heard that some programs requires 2 psych letters (I'm applying combined psych/child psych btw). I will have 1 psych letter, 1 psych chair letter from my school, 1 peds letter and 1 IM letter. Is this sufficient? All of my letters are fairly strong, at least I sure hope so, and I believe you can only have 4 ERAS letters so I'm unsure on the utility of an additional letter. Thank you.