Method The study methods of this project included dynamic disease surveillance, multiple risk factors examinations, cross - sectional and prospective study, and modeling of predictive models, etc.

Color-Flow Doppler Ultrasound measures the severity of peripheral vascular disease and is used by Cardiology for dynamic evaluation of the heart, heart valves and major vessels.

Objective To investigate the dynamic changes of the coagulation function in children with infectious disease and its prognosis significance.