Comparison of Multiplex Nested RT-PCR with Virus Isolation for Detection of Influenza Viruses A and B - T Mokhtari-Azad,; F Rezaie-Khollari,; AR Nadji,; V Salimi,; Z Noroozbabaie,; M Naseri,; AR Mirzaie,; Z Saadatmand,; MMGouya,; AR Esteghamati,; RHamkar, (Iranian Journal of Public Health)