Treating refractory obsessive compulsive disorder with cathodal transcranial direct current stimulation over the supplementary motor area: a large multisite randomized sham-controlled double-blind study. - Harika-Germaneau G; Heit D; Drapier D; Sauvaget A; Bation R; Chatard A; Doolub D; Wassouf I; Langbour N; Jaafari N (Frontiers in psychiatry, 2024)