1. ESRF─The European Synchrotron, 71 Avenue des Martyrs, F-38043 Grenoble, France
2. Institute of Geosciences, University Frankfurt, Altenhoeferallee 1, D-60438 Frankfurt a.M., Germany
3. Dassault Systémes BIOVIA, 22 Cambridge Science Park Milton Road, Milton, Cambridge CB4 0FJ, U.K.