1. Department of Biomedical Sciences University of Guelph 50 Stone Road East Guelph ON N1G 2W1 Canada
2. Department of Biology Aarhus University Ny Munkegade 114‐116 Aarhus C DK‐8000 Denmark
3. Department of Medical Physics and Biomedical Engineering University College London London WC1E 6BT U.K.
4. Department of Cell and Developmental Biology University College London London WC1E 6BT U.K.
5. Department of Mechanical Engineering University College London London WC1E 7JE U.K.
6. Département Adaptations du Vivant UMR 7179 MECADEV C.N.R.S/M.N.H.N. Bâtiment d'Anatomie Comparée, 55 rue Buffon Paris 75005 France
7. Department of Life Sciences, Faculty of Natural Sciences Imperial College London Silwood Park Campus Berkshire SL5 7PY U.K.