Pham Ngoc Thanh และ Aree Jampaklay. (2012) HIV infection and risk behaviors among male injecting drug users in the Central Highlands, Vietnam, 2011. Mahidol University:ม.ป.ท.Pham Ngoc Thanh และ Aree Jampaklay. 2012. HIV infection and risk behaviors among male injecting drug users in the Central Highlands, Vietnam, 2011. ม.ป.ท.:Mahidol University;Pham Ngoc Thanh และ Aree Jampaklay. HIV infection and risk behaviors among male injecting drug users in the Central Highlands, Vietnam, 2011. ม.ป.ท.:Mahidol University, 2012. Print.