Namchai Chewawiwat. (1993) Study on correlation between activated ras oncogene and human papillomavirus infection in cervical cancer in Thailand. Mahidol University,:ม.ป.ท.Namchai Chewawiwat. 1993. Study on correlation between activated ras oncogene and human papillomavirus infection in cervical cancer in Thailand. ม.ป.ท.:Mahidol University,;Namchai Chewawiwat. Study on correlation between activated ras oncogene and human papillomavirus infection in cervical cancer in Thailand. ม.ป.ท.:Mahidol University, 1993. Print.