1. Department of Computer Science, University of North Carolina, 201 South Columbia Street, Chapel Hill, North Carolina 27599, United States
2. Department
of Biochemistry and Biophysics, University of North Carolina, 120
Mason Farm Road, Chapel Hill, North Carolina 27599, United States
3. Google Inc., 1600 Amphitheatre
Parkway, Mountain View, California 94043, United States
4. Department of Bioengineering and Therapeutic Science, University of California San Francisco, 513 Parnassus Avenue, San Francisco, California 94143, United States
5. Department
of Biochemistry, University of Washington, 1705 North East Pacific Street, Seattle, Washington 98195, United States
6. Fred Hutchinson Cancer Research
Center, 1100 Fairview Avenue North, Seattle, Washington 98109, United States