They're going to have very diverse populations, too. I've actually been in Lakeland FL, and as one would expect, there are a lot of white retirees. St. Louis they should get a lot more ethnically diverse group -- that's important because some drugs do not work as well on certain groups. And they should have no trouble getting patients in Rapid City since that's really THE regional place for treatment. So it looks like they've designed this really well (not that that's a surprise).

Here's sox's list of sites again for reference:

United States, Florida
Recruiting
Lakeland, Florida, United States

United States, Missouri
Recruiting
St. Louis, Missouri, United States

United States, New York
Recruiting
Rochester, New York, United States

United States, Oregon
Recruiting
Portland, Oregon, United States, 19083

United States, South Dakota
Recruiting
Rapid City, South Dakota, United States