Also Cook Children's has a bone marrow transplant unit and so does Methodist Children's in San Antonio. Both of these units require you rotate into regular pedi hem/onc too. I worked for Cook last summer as an extern in those units and I have got to say, that is the NICEST most CONTEMPORARY hospital you'll ever see. It's beautiful, every detail is thought out. There's a build-a-bear workshop, Chick-fil-a, and ice cream parlor inside the hospital. There's a recording studio for the kids and a craft/cooking channel too. It's amazing.