1. The Mina and Everard Goodman Faculty of Life Sciences and Advanced Materials and Nanotechnology Institute, Bar-Ilan University, Ramat-Gan 52900 Israel
2. Department of Structural Biology, Weizmann Institute of Science, Rehovot 7610001, Israel
3. Department of Epidemiology of Microbial Diseases, Yale School of Public Health, New Haven, CT 06536, USA
4. Department of Internal Medicine, Yale School of Medicine, New Haven, CT 06536, USA