Study Design: Randomized, controlled trial; Level of evidence, 1.
研究设计：随机对照研究； 循证医学级别，1级。
The first level of treatment is a trial of a low-fat diet and exercise.
第一级的待遇是一个审判的低脂肪饮食和运动。
A new retail customer just signed up for a 7-day trial on your level 4.
一个新的零售客户只是签署了一个7天的试用你的4级。
A new retail customer just signed up for a 7-day trial on your level 4.
一个新的零售客户只是签署了一个7天的试用你的4级。
应用推荐