Electrocochleography triggered intervention successfully preserves residual hearing during cochlear implantation: results of randomised clinical trial von Bester, Christofer, Collins, Aaron, Razmovski, Tayla, Weder, Stefan, Briggs, Robert J., Wei, Benjamin, Zakaria, Atiqah Farah, Gerard, Jean-Marc, Mitchell-Innes, Alistair, Tykocinski, Michael, Kennedy, Richard, Iseli, Claire, Dahm, Markus, Ellul, Simon, O'Leary, Stephen