This study was supported by a grant from the National Natural Science Foundation of China (No. 30371365).
Background As with many studies carried out in European countries, a quality assurance program has been established by the National Center for Clinical Laboratories in China (NCCL). The results showed that the exter...
This work was supported partly by a grant from the National Natural Science Foundation of China (No. 30371365).
Background Since October 1997, an international standard for hepatitis C virus (HCV) nucleic acid amplification technology assay, 96/790, has been available. We compared a series of lyophilized standards with known ...