BMC Surgery

unofficial impact factor 1.40

Open Access Research article

Non-randomised patients in a cholecystectomy trial: characteristics, procedures, and outcomes

Axel Ros, Per Carlsson, Mikael Rahmqvist, Karin Bäckman and Erik Nilsson*

BMC Surgery 2006, 6:17 doi:10.1186/1471-2482-6-17

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