@RidleyDM @DrLeanaWen There are a bunch of papers in the CDC briefing materials that speak to mandates, and also to a relationship between level of usage and size of effect (relationship of level of usage to mandates is very obvious, in practice).
@RidleyDM@DrLeanaWen在CDC简报材料中有一堆论文涉及授权，也涉及使用水平和效果大小之间的关系（在实践中，使用水平与授权之间的关系非常明显）。