Evaluation of perfluorohexyloctane/polydimethylsiloxane for pancreas preservation for clinical islet isolation and transplantation by Sthle, M, Foss, A, Gustafsson, B, Lempinen, M, Lundgren, T, Rafael, E, Tufveson, G, Theisinger, B, Brandhorst, D, Korsgren, O, Friberg, A