Chantratita W, Sukasem C, Sirinavin S, Sankuntaw N, Srichantaratsamee C, Pasomsub E, Malathum K (2011) Simultaneous detection and subtyping of H274Y-positive influenza A (H1N1) using pyrosequencing. J Infect Dev Ctries 5:348–352. doi: 10.3855/jidc.1197