1. Canadian Institute for Advanced Research, Department of Botany, University of British Columbia, 3529-6270 University Boulevard, Vancouver, BC, V6T 1Z4, Canada
2. Josephine Bay Paul Center for Comparative Molecular Biology and Evolution, Marine Biological Laboratory, Woods Hole, Massachusetts
3. Universität Basel, Zoologisches Institut, Vesalgasse 1, CH-4051 Basel, Switzerland
4. Department of Medicine, Albert Einstein College of Medicine, Bronx, New York
5. Department of Pathology, Albert Einstein College of Medicine, Bronx, New York
6. Division of Infectious Diseases, Tufts Cummings School of Veterinary Medicine, North Grafton, Massachusetts