Thi ThuyLe. 2018. “A Case Report: Early Detection and Monitoring of Non-Symptomatic Recurrent Metastasis of a Nasopharyngeal Carcinoma Patient Using the Ultrasensitive Realtime PCR Assay of Cell-Free Epstein-Barr Virus DNA”. Journal of 108 - Clinical Medicine and Phamarcy 13 (TA). https://tcydls108.benhvien108.vn/index.php/YDLS/article/view/1214.