Chartchai Puripokai และ Punnee Butthep. (2006) Study of von willebrand factor in patients with dengue hemorrhagic fever. Mahidol University:ม.ป.ท.Chartchai Puripokai และ Punnee Butthep. 2006. Study of von willebrand factor in patients with dengue hemorrhagic fever. ม.ป.ท.:Mahidol University;Chartchai Puripokai และ Punnee Butthep. Study of von willebrand factor in patients with dengue hemorrhagic fever. ม.ป.ท.:Mahidol University, 2006. Print.