Evaluation of a stand-alone mobile mindfulness app in people experiencing infertility: the protocol for an exploratory randomised controlled trial (MoMiFer-RCT) oleh Filip Raes, Tessy Boedt, Eline Dancet, Sharon Lie Fong, Katleen Van der Gucht, Carl Spiessens, Christophe Matthys, Nele Willaert