Evangelos Kokolakis, Iven-Alex von Mücke-Heim, Julius C. Pape, Norma C. Grandi, Angelika Erhardt, Philipp G. Sämann, Victor Spoormaker, Nadine Gogolla, Elisabeth B. Binder, Peter Falkai. "Protocol of the randomized double blind sham controlled AddVNS study of transcutaneous vagus nerve stimulation mechanisms in depression." Scientific Reports, 2026. doi:10.1038/s41598-026-42459-2