这项研究的结果在2月28日美国加利福尼亚州洛杉矶逆转录病毒和机会感染会议上提出。

The study's findings were presented at the Conference on Retroviruses and Opportunistic Infections in Los Angeles, California, us, on 28 February.

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普莱斯顿大学，美国加利福尼亚州洛杉矶，是一家私人拥有的，以营利为目的的公司。

Preston University, Los Angeles, California USA is a privately owned, for-profit corporation, incorporated in the State of California, USA.

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好莱坞，本意上是一个地名的概念，位于美国加利福尼亚州洛杉矶，约有30万居民。

Hollywood, intent on a concept of geographical names, located in Los Angeles, California, United States, about 30 million inhabitants.

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