1. Institute of Applied Physics, University of Heidelberg, Albert‐Überle‐Str. 3–5, 69120 Heidelberg, Germany,
2. Interdisciplinary Centre of Scientific Computing, University of Heidelberg, INF 368, 69120 Heidelberg, Germany,
3. Max‐Planck‐Institute of Medical Research, Jahnstr. 29, 69120 Heidelberg, Germany