1. AIMMS Division of Molecular Toxicology, Department of Chemistry and Pharmaceutical Sciences; VU University, De Boelelaan 1083; 1081 HV Amsterdam the Netherlands
2. Department of Drug Design and Pharmacology; University of Copenhagen, Universitetsparken 2; DK-2100 Copenhagen Denmark
3. Vertex Pharmaceuticals Incorporated; 50 Northern Avenue Boston, MA 02210
4. Vertex Pharmaceuticals Incorporated; 11010 Torreyana Road San Diego, CA 92121