Wake Forest has traditionally been a "female friendly" program. Currently there are five: one chief, two PGY 4's, one PGY 3, one PGY-2 (out of 3 or 4 in each class). The whole gender thing isn't even an issue. There are usually 2 or 3 general surgery interns as well. The girls in the surgery programs (Gen Surg, Ortho, ENT, Plastics) get together once every couple of months for dinner/drinks. It's nice to have a group of women to talk with about career decisions, workplace issues, and stuff outside of work. I would also recommend talking with any female faculty you may have in your institution (ortho, general surgery, etc) and ask for their experiences.