[1] Univ Calif San Francisco, Diabet Ctr, Dept Med, San Francisco, CA 94143 USA
[2] Tech Univ Munich, TUM Sch Med, Munich, Germany
[3] Tech Univ Munich, Ctr Organoid Syst, Garching, Germany
[4] Helmholtz Zentrum Munchen, Helmholtz Diabet Ctr, Inst Diabet & Obes, Neuherberg, Germany
[5] Tech Univ Munich, Munich Inst Biomed Engn MIBE, Munich, Germany
[6] German Ctr Diabet Res DZD, Ingolstaedter Landstr 1, D-85764 Neuherberg, Germany
[7] Helmholtz Munich, Helmholtz Diabet Ctr, Inst Diabet Organoid Technol, Ingolstadter Landstrae 1, D-85764 Neuherberg, Germany
[8] Helmholtz Ctr Munich, Inst Diabet & Organoid Technol, Ingolstadter Landstr 1, D-85764 Neuherberg, Germany
[9] Univ Calif San Francisco, Diabet Ctr, 513 Parnassus Ave,HSW 1116,Box 0540, San Francisco, CA 94143 USA