Interpreting Study Designs in Surgical Research: A Practical Guide for Surgeons and Surgical Residents

Interpreting Study Designs in Surgical Research: A Practical Guide for Surgeons and Surgical Residents

Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the American College of Surgeons - Volume 208, Issue 4, April 2009, Pages 635-645

Paul F. MD, MMedSc, FRCS(GenSurg), Ulrich MD, MHS,