1. Inpatient hospital admission through an emergency department in relation to stage at diagnosis of colorectal cancer.;Polednak;Cancer Detect Prev,2000
2. The association between referral source and stage of disease in patients with colorectal cancer.;Bevis;Colorectal Dis,2008
3. Poor awareness of colorectal cancer symptoms; a preventable cause of emergency and late stage presentation.;Manning;Ir J Med Sci,2006
4. Nonparametric estimation from incomplete observations.;Kaplan;Am Stat Assoc J,1958
5. Statistical aspects of the analysis of data from retrospective studies of disease.;Mantel;J Natl Cancer Inst,1959