Environmental factors in cancer of the upper alimentary tract.A swedish study with special reference to plummer-vinson (Paterson-Kelly) syndrome

Abstract

N the investigation of etiological factors in I cancer, the search for precancerous ( onditions and their causes seems of particular importance. Such study has both academic interest, in that it may elucidate the pathogenesis of canccr, and practical significance, in that it may point to preventive measures.