The Youth Risk Behavior Surveillance System is the largest U.S. public health surveillance system and collects data on health behaviors among high school students in grades 9-12.
The Youth Risk Behavior Surveillance System is the largest U.S. public health surveillance system and collects data on health behaviors among high school students in grades 9-12.
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萃取時間: 2026-02-05T15:15:22Z 資料來源: CDC MMWR