Elias, G., Boutet, A., Parmar, R., Wong, E., Germann, J., … Loh, A. (1969). Neuromodulatory treatments for psychiatric disease: A comprehensive survey of the clinical trial landscape. Brain Stimulation, 14(5), 1393-1403. https://doi.org/10.1016/j.brs.2021.08.021 (Original work published 1969)