Sunday, September 7, 2008 - 6:35PM EST

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Sweden

Name of AuthorInstitutional Affiliation
Ekman PKarolinska Institutet, Department of Clinical Science, Intervention and Technology, Stockholm, Sweden. per.ekman@sodersjukhuset.se
Ekman, PerStockholm Soder Hospital, Department of Orthopedic Surgery, Stockholm Soder Hospital, 118 83 Stockholm, Sweden. per.ekman@sos.sll.se
Hedlund RKarolinska Institutet, Department of Clinical Science, Intervention and Technology, Stockholm, Sweden.