Are MSTPers in graduate programs at Harvard and UWash limited to working with investigators listed on the graduate program's website, or can you work with others, too? For example, if I identify a faculty member with whom I want to work who isn't listed for any grad dept, can I go ahead as long as he/she agrees to take me on? This UWash link suggests so. There are some cool labs at Dana-Farber and Fred Hutchinson that don't appear to be affiliated with a graduate department.