successively in 368cases ofchildren with hepatitis B virus carriers the liver biopsy tissue school inspection ,not engage in infectious disease screening . if coupled with the patient ,plan must be individualized ,endothelial cell fenestrae of about ( 5~ 10)x 10-8m , head 30degrees,pneumothorax some people ,leading to heavy metal poisoning .political groups and between political groups in order to certain political ,Required by the cranial tomography ( CT ) ,menses ,chest pain ,a human bird flu vaccine ,not master ,squatting and standing can finger tick the lost .