Prachayangprecha, S.; Makkoch, J.; Payungporn, S.; Chieochansin, T.; Vuthitanachot, C.; Vuthitanachot, V.; Theamboonlers, A.; Poovoranwan, Y. Serological Analysis of Human Pandemic Influenza (H1N1) in Thailand. J Health Popul Nutr 2010, 28, 537-544.