Do an Internet search for "paid medical studies".
在网上以“付费医学研究”为关键字可以搜索到相关信息。
Previous studies suggested that the quality of health information on the Internet is poor.
既往研究表明，互联网中的健康信息质量较差。
Previous studies suggested that the quality of health information on the Internet is poor.
既往研究表明，互联网中的健康信息质量较差。
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