Manaaki – a cognitive behavioral therapy mobile health app to support people experiencing gambling problems: a randomized control trial protocol oleh Gayl Humphrey, Joanna Chu, Nicki Dowling, Simone Rodda, Stephanie Merkouris, Varsha Parag, David Newcombe, Elsie Ho, Vili Nosa, Rebecca Ruwhui-Collins, Robyn Whittaker, Chris Bullen