1. Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, MA, USA
2. Institute of Human Genetics, University of Heidelberg, Heidelberg, Germany
3. Division Biophysics of Macromolecules, B040, German Cancer Research Center (DKFZ), TP3, Heidelberg, Germany
4. University of New England, College of Pharmacy, Department of Pharmaceutical Sciences, Portland, ME, USA