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Tietz A, Frei R, Dangel M, Bolliger D, Passweg JR, Gratwohl A, Widmer AE.Tietz A, et al. Among authors: frei r.Infect Control Hosp Epidemiol. 2005 Aug;26(8):703-7. doi: 10.1086/502606.Infect Control Hosp Epidemiol. 2005.PMID: 16156327
Weisser M, Capaul S, Dangel M, Elzi L, Kuenzli E, Frei R, Widmer A.Weisser M, et al. Among authors: frei r.Infect Control Hosp Epidemiol. 2013 Oct;34(10):1109-12. doi: 10.1086/673145. Epub 2013 Aug 29.Infect Control Hosp Epidemiol. 2013.PMID: 24018931
Buehlmann M, Frei R, Fenner L, Dangel M, Fluckiger U, Widmer AF.Buehlmann M, et al. Among authors: frei r.Infect Control Hosp Epidemiol. 2008 Jun;29(6):510-6. doi: 10.1086/588201.Infect Control Hosp Epidemiol. 2008.PMID: 18510460
Cantoni N, Weisser M, Buser A, Arber C, Stern M, Heim D, Halter J, Christen S, Tsakiris DA, Droll A, Frei R, Widmer AF, Flückiger U, Passweg J, Tichelli A, Gratwohl A.Cantoni N, et al. Among authors: frei r.Eur J Haematol. 2009 Aug;83(2):130-8. doi: 10.1111/j.1600-0609.2009.01249.x. Epub 2009 Mar 5.Eur J Haematol. 2009.PMID: 19284419