5Allander T, Jartti T, Gupta S, et al. Human bocavirus and acute wheezing in children [J]. Clin Infect Dis , 2007, 44 (7): 904-910.
6Shay DK, Holman RC, Newman RD, el al.Bronchiolitis-assoei- ated hospitalizations among US children, 1980-1996 [J ].JAMA, 1999,282 (15):1440-1446.
7Kesebir D,Vazquez M,Weibel C, et al. Human bocavirus infec- tion in young children in the United States: molecular epidemio- logical profile and clinical characteristics of a newly emerging respiratory virus [ J ] .Infect Dis, 2006, 194 (9) : 1276-1282.
8Allander T , Jami T, Gupta S, et al. Human bocavirus and acute wheezing in children.Clin Infect Dis, 2007,44:904-910.
9Jeroen M, Chiaoyin K.Wang , et al. Real-time reverse transcrip- tase PCR assay for detection of human metapneumoviruses from all known genetic lineages [J].J olin Microbiol, Mar.2004, 981-986.
10Houben ML, Coenjaerts FEJ. Disease severity and viral load are correlated in infants with primary respiratory syncytial virus in- fection in the community [J]. J Med Virol , 2010, 82: 1266-1271.