7Rudan I, Campbell H. The deadly toll of S pneumoniae and H influenzae type b[J]. Lancet, 2009,374 : 854-856.
8Fridholm H, Everitt E. Rapid and reproducible infectivity endpoint titration of virulent phage in a microplate system[J].J Virol Methods,2005,128:67-71.
9Harnden A, Perera R, Brueggemann AB, et al. Respiratory infections for which general practitioners consider prescribing an antibiotic: a prospective study[J]. Arch Dis Child,2007, 92 : 594-597.
10Harnden A, Perera R, Brueggemann AB, et al. Respira- tory infections for which general practitioners consider prescribing an antibiotic: a prospective study[J] Arch Dis Child,2007,92(7):594 - 597.
