1Scherubl H,von Lampe B,Faiss S,et al.Screening for oesophageal neoplasia in patients with head and neck cancer.Br J Cancer,2002,21,86:239-243.
2Muto M,Hitomi Y,Ohtsu A,et al.Association of aldehyde dehydrogenase 2 gene polymorphism with multiple oesophageal dysplasia in head and neck cancer patients.Gut,2000,47:256-261.
