周三的美国医学协会杂志上刊载了这项研究。研究资助方是德国科隆大学医院。
The study appears in Wednesday's Journal of the American Medical Association. It was funded by University Hospital in Cologne.
周三的美国医学协会杂志上刊载了这项研究。研究资助方是德国科隆大学医院。
The study appears in Wednesday's Journal of the American Medical Association. It was funded by University Hospital in Cologne.
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