Genetic factors leading to chronic Epstein-Barr virus infection and nasopharyngeal carcinoma in South East China: Study design, methods and feasibility oleh Guo Xiu, Scott Kevin, Liu Yan, Dean Michael, David Victor, Nelson George W, Johnson Randall C, Dilks Holli H, Lautenberger James, Kessing Bailey, Martenson Janice, Guan Li, Sun Shan, Deng Hong, Zheng Yuming, de The Guy, Liao Jian, Zeng Yi, O'Brien Stephen J, Winkler Cheryl A