By Øgard Christina G.   Engholm Gerda   Almdal Thomas P.   Vestergaard Henrik   in World Journal of Surgery

ISSN:0364-2313|28|1|108-111

Springer Publishing Company ‎(2004)‎

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By Øgard Christina   Petersen Janne   Jørgensen Torben   Almdal Thomas   Vestergaard Henrik   in European Journal of Epidemiology

ISSN:0393-2990|21|2|123-127

Springer Publishing Company ‎(2006)‎

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