Ureter‐ileum‐interposition: Combined experience from two high‐volume centres oleh Maksym Pikul, David Pfister, Constantin Rieger, Christian Bach, Oleg Voylenko, Oleksandr Stakhovskyi, Sofiya Semko, Iurii Vitruk, Oleksii Kononenko, Eduard Stakhovsky, Axel Heidenreich