请教Sob老师和各位同仁,审稿人提出的一个问题:“However, the method used is of concern as M06 is known to overestimate barriers; results from at least 1 other method should be provided, for at least the RDS barriers to ensure that the observed trends are not methodological artefacts” 我想请教RDS能垒是什么能垒?我实际用的方法是M06-2X,他和M06差别大吗?非常感谢!