Sentence: Real-time PCR was applied to verify analyse the presence of 15 common respiratory viruses ( adenovirus , human bocavirus , influenza virus A and B , repiratory syncytial virus , human parainfluenza virus types 1 , 2 , 3 and 4 , human enterovirus , human rhinovirus , human metapneumovirus , human coronavirus group 1 ( 229E , NL63 ) and 2 ( OC43 , HKU1 ). 
 Section: finding