title: Methodologic barriers to addressing critical questions about tobacco and cancer prognosis.
authors.forename: Stephanie R
authors.initials: SR
authors.lastname: Land
mesh_terms: D019941:Cyclin-Dependent Kinase Inhibitor p16 / Q000096:biosynthesis*; D005260:Female; D006801:Humans; D008297:Male; D009959:Oropharyngeal Neoplasms / Q000378:metabolism* / Q000401:mortality*; D012907:Smoking / Q000009:adverse effects*
chemical_list: D019941:Cyclin-Dependent Kinase Inhibitor p16