Pongphaya Choosakulchart และ Tanattha Kittisopee. (2011) Cost-utility evaluation of influenza vaccination in patients with existing cardiovascular diseases in Thailand. Chulalongkorn University:ม.ป.ท.Pongphaya Choosakulchart และ Tanattha Kittisopee. 2011. Cost-utility evaluation of influenza vaccination in patients with existing cardiovascular diseases in Thailand. ม.ป.ท.:Chulalongkorn University;Pongphaya Choosakulchart และ Tanattha Kittisopee. Cost-utility evaluation of influenza vaccination in patients with existing cardiovascular diseases in Thailand. ม.ป.ท.:Chulalongkorn University, 2011. Print.