[Etiological relationship between leukoplakia, lues and cancer of the oral cavity].
D007971:Leukoplakia / Q000150:complications; D009059:Mouth Diseases; D009062:Mouth Neoplasms / Q000209:etiology; D011230:Precancerous Conditions; D012907:Smoking / Q000150:complications; D013587:Syphilis / Q000150:complications
Z etiologichnata vruzka mezhdu levkoplakiiata, luesa i raka na ustnata kukhina.