1. Coalition for Epidemic Preparedness Innovations, 0412 Oslo, Norway;
2. Geisel School of Medicine, Dartmouth College, Hanover, New Hampshire 03755;
3. Norwegian Institute of Public Health, 0473 Oslo, Norway;
4. Department of Industrial Economics and Technology Management, Norwegian University of Science and Technology, 2815 Gjøvik, Norway;
5. Research Council of Norway, 1327 Lysaker, Norway