1. Computational Biology Center, Memorial Sloan-Kettering Cancer Center, New York, NY 10065, USA.
2. Computer Engineering Department, Bilkent University, 06800 Ankara, Turkey.
3. Institute of Biomedicine, Department of Medical Biochemistry and Cell Biology, University of Gothenburg, S-405 30 Gothenburg, Sweden.
4. Blueprint Medicines, Cambridge, MA 02142, USA.