1. Center for Systems Biology, Massachusetts General Hospital, 185 Cambridge Street,
CPZN 5206, Boston, Massachusetts 02114, United States
2. Department of Molecular Medicine, Kyungpook National University School of Medicine, Daegu,
South Korea
3. Program in Molecular Pharmacology
and Chemistry and Department of Radiology, Memorial Sloan-Kettering Cancer Center, New York, New York 10065, United States
4. Department of Systems Biology, Harvard Medical School, 200 Longwood Avenue, Boston,
Massachusetts 02115, United States