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Ketter TA, Andreason PJ, George MS, Lee C, Gill DS, Parekh PI, Willis MW, Herscovitch P, Post RM.Ketter TA, et al. Among authors: gill ds.Arch Gen Psychiatry. 1996 Jan;53(1):59-69. doi: 10.1001/archpsyc.1996.01830010061009.Arch Gen Psychiatry. 1996.PMID: 8540778