This news comes from doctors at the Johns Hopkins School of Medicine in the U. S. state of Maryland.

该消息来自于美国马里兰州约翰·霍普金斯医学院的医生。

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This news comes from doctors at the Johns Hopkins School of Medicine in the U. S. state of Maryland.

该消息来自于美国马里兰州约翰·霍普金斯医学院的医生。

youdao