1. 1) Coppen, A., Shaw, D. M. and Malleson, A., Changes in 5-hydroxytryptophan metabolism in depression, Br. J. Psychiatry, 111, 105–107 (1965)
2. 2) Phillips, M., Sabas, M. and Greenberg, J., Increased pentane and carbon disulfide in the breath of patients with schizophrenia, J. Clin. Pathol., 46, 861–864 (1993)
3. 3) Sargent, T. 3rd, Kusubov, N., Taylor, S. E. and Budinger, T. F., Tracer kinetic evidence for abnormal methyl metabolism in schizophrenia, Biol. Psychiatry, 32, 1078–1090 (1992)
4. 4) Yamashita, S., Kajiwara, M., Naruse, H., Ohshima, A., et al., 13C-Phenylalanine breath breath test using an infrared spectroscopy for detection of metabolic changes in depressive disorder, 13C, Medicine (Baltimore), 12, 16–17 (2002)
5. 5) da Silva Alves, F., Figee, M., van Amelsvoort, T., Veltman, D., et al., The revised dopamine hypothesis of schizophrenia: evidence from pharmacological MRI studies with atypical antipsychotic medication, Psychopharmacol Bull, 41, 121–132 (2008)