Introduction

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• Hwu, H. G., Chen, C. H., Hwang, T. J., Liu, C. M., Cheng, J. J., Lin, S. K., Liu, S. K., Chen, C. H., Chi, Y. Y., OuYoung, C. W., Lin, H. N., and Chen, W. J. (2002). Symptom Patterns and Subgrouping of Schizophrenic Patients: Significance of Negative Symptoms Assessed on Admission. Schizophrenia Research 56, 105-119.