1
enthalten in: World journal of surgery | 2009



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5



6
enthalten in: Annals of surgical oncology | 2009



7
enthalten in: Annals of surgical oncology | 2009



8
enthalten in: Annals of surgical oncology | 2009



9
enthalten in: BMC health services research | 2008



10
enthalten in: BMC health services research | 2008