Meanwhile, the application of case-crossover study in the field of traffic injuries research is also discussed.
同时探讨病例交叉研究方法在道路交通伤害研究中的适用性。
Methods a randomized, single blind and crossover study was performed and blood pressure was measured by 24 hour ambulatory blood pressure monitoring.
方法采用随机、单盲和交叉的方法，运用24小时动态血压监测。
METHODS: This is an open randomized, three-period crossover study in 18 healthy male volunteers.
方法：18名男性健康受试者采用随机分组自身交叉对照实验方法。
METHODS: This is an open randomized, three-period crossover study in 18 healthy male volunteers.
方法：18名男性健康受试者采用随机分组自身交叉对照实验方法。
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