Prognostic significance of biologic factors in squamous cell carcinoma of the esophagus.
Cancer. 1999 Oct 15;86(8):1396-405. doi: 10.1002/(sici)1097-0142(19991015)86:8<1396::aid-cncr3>3.0.co;2-h.
Cancer. 1999.
PMID: 10526265