Propofol-based anaesthesia versus sevoflurane-based anaesthesia for living donor kidney transplantation: results of the VAPOR-1 randomized controlled trial by Nieuwenhuijs-Moeke, GJ, Nieuwenhuijs, VB, Seelen, MAJ, Berger, SP, Van Den Heuvel, MC, Burgerhof, JGM, Ottens, PJ, Ploeg, RJ, Leuvenink, HGD, Struys, MMRF