Internet-delivered cognitive behavioral therapy for tinnitus compared to Internet-delivered mindfulness for tinnitus: a study protocol of a randomized controlled trial oleh Jonas Eimontas, Goda Gegieckaitė, Irena Asačiova, Nikol Stičinskaitė, Livija Arcimavičiūtė, Dovilė Savickaitė, Donata Vaitiekūnaitė-Zubriakovienė, Marius Polianskis, Jennifer Gans, Eldre Beukes, Vinaya Manchaiah, Gerhard Andersson, Eugenijus Lesinskas