Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Patrick Fricke and Robert Nickl and Maria Breun and Jens Volkmann and Dalal Kirsch and R.-I. Ernestus and Frank Steigerwald and Cordula Matthies,Directional Leads for Deep Brain Stimulation: Technical Notes and Experiences,Stereotactic and Functional Neurosurgery,1011-6125,S. Karger AG,2021,99,4,305-312,https://cir.nii.ac.jp/crid/1362825895836182400,https://doi.org/10.1159/000512231