Telomerase expression in respiratory epithelium during the multistage pathogenesis of lung carcinomas - Yashima,K.; Litzky,L.A.; Kaiser,L.; Rogers,T.; Lam,S.; Wistuba,I.I.; Milchgrub,S.; Srivastava,S.; Piatyszek,M.A.; Shay,J.W.; Gazdar,A.F. (Cancer Res, 1997)