1 Diabetes Research Center, Vrije Universiteit Brussel, Brussels, Belgium.
2 Diabetes Center, California Institute for Regenerative Medicine (CIRM), University of California San Francisco, San Francisco, California, USA.
3 The Institute for Medical Research Israel-Canada, The Hebrew University, Jerusalem, Israel.
4 Umeå Center for Molecular Medicine, Umeå University, Umeå, Sweden.
5 Department of Cell and Developmental Biology, Vanderbilt University Program in Developmental Biology, Vanderbilt University Medical Center, Nashville, Tennessee, USA.
6 Institute for Diabetes, Obesity, and Metabolism, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania, USA.
7 Institut d'Investigacions Biomediques August Pi i Sunyer, Hospital Clinic de Barcelona, Barcelona, Spain.
8 Imperial College London, London, UK.
9 Development and Stem Cells Program, Institute of Genetics and Molecular and Cellular Biology (IGBMC), Illkirch, France.
10 Diabetes Research Center, Vrije Universiteit Brussel, Brussels, Belgium. lucbo@expa.vub.ac.be.
11 Diabetes Research Center, Vrije Universiteit Brussel, Brussels, Belgium. Harry.Heimberg@vub.ac.be.