Objective: Based on evidence-based medicine system , evaluation of tonify deficiency and activation blood mainly evaluate the efficacy and safety of children with primary nephrotic syndrome (PNS).

The study fields of EBM in China include EBM education, systematic review, and critical evaluation of randomized controlled trial (RCT), etc.

Objective A systematic review was conducted to determine reliability of contrast-enhanced ultrasonography diagnostic tests for focal nodular hyperplasia and to explore sources of heterogeneity.