He called for research into the physical causes of mental illness and established the foundations of the modern classification system for mental disorders.
他提倡研究精神疾病的生理成因，并制定了对精神疾病的现代分类体系。
THE DETAILS: a good next step is to arrange a consultation with your doctor to rule out any physical causes of your sleep difficulty.
具体方法：下一步最好先咨询你的医生，以排除任何引起失眠的身体方面的因素。
THE DETAILS: a good next step is to arrange a consultation with your doctor to rule out any physical causes of your sleep difficulty.
具体方法：下一步最好先咨询你的医生，以排除任何引起失眠的身体方面的因素。
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