Helbok และผู้แต่งคนอื่นๆ. 2002. Sequential level of tumor necrosis factor alpha and clinical manifestations in severe, non-severe falciparum and vivax malaria. Field of Study Clinical Tropical Medicine, Mahidol University;

Helbok และผู้แต่งคนอื่นๆ. Sequential level of tumor necrosis factor alpha and clinical manifestations in severe, non-severe falciparum and vivax malaria. . Bangkok:Mahidol University, 2002.

Helbok และผู้แต่งคนอื่นๆ. (2002) Sequential level of tumor necrosis factor alpha and clinical manifestations in severe, non-severe falciparum and vivax malaria . Mahidol University/Bangkok.