Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Sarah M. Szymkowicz and Nora Finnegan and Roman M. Dale,A 12-month naturalistic observation of three patients receiving repeat intravenous ketamine infusions for their treatment-resistant depression,Journal of Affective Disorders,0165-0327,Elsevier BV,2013-05,147,1-3,416-420,https://cir.nii.ac.jp/crid/1362544419194764160,https://doi.org/10.1016/j.jad.2012.10.015