1. Van Andel Research
Institute, 333 Bostwick Avenue NE, Grand Rapids, Michigan 49503, United States
2. Thomas Jefferson
University, 1025 Walnut Street, Philadelphia, Pennsylvania 19107, United States
3. University of Pittsburgh Medical Center, 200 Lothrop Street, Pittsburgh, Pennsylvania 15213, United States
4. Memorial Sloan
Kettering Cancer Center, 1275 York
Avenue, New York, New York 10065, United States