1Halleberg Nyman M, Johansson JE,Persson Ket al. A pro-spective study of nosocomial urinary tract infection in hipfracturepatients[J]. J Clin Nurs.2011,20(17-18) :2531-2539.
2Maeng SH, Yoo HS, Choi SH, et al. Impact of parainfluenzavirus infection in pediatric cancer patients[J]. Pediatr BloodCancer,2012,59(4) :708-710.'.