To compare the frequency distribution of alleles in lung cancer patients and normal subjects. And analyze the risk of lung cancer in a population living in northern Thailand .
To compare the distribution of frequencies of the Al League in normal people and patients with lung cancer and lung cancer risks in populations that live in northern Thai .
to compare the distribution of the frequency of lung cancer patients in อัลลี, and normal people and analyze the risk of lung cancer in a group of Thai population living in the northern region