1. Center for Isotope Research (CIO), Energy and Sustainability Research Institute Groningen (ESRIG) University of Groningen The Netherlands
2. Université Joseph Fourier (Grenoble I) Laboratoire Interdisciplinaire de Physique (LIPhy UMR5588) France
3. Center for Behavior and Neurosciences, Unit Neuroendocrinology University of Groningen The Netherlands
4. Terrestrial Environment Laboratory, International Atomic Energy Agency (IAEA) Seibersdorf Austria