Wang LD, Zhou Q, Wei JP, Yang WC, Zhao X, Wang LX, Zou JX, Gao SS, Li YX, Yang C. Apoptosis and its relationship with cell proliferation, p53, Waf1p21, bcl-2 and c-myc in esophageal carcinogenesis studied with a high-risk population in northern China. World J Gastroenterol 1998; 4(4): 287-293 [PMID: 11819301 DOI: 10.3748/wjg.v4.i4.287]