| http://www.w3.org/ns/prov#value | - The features and principles of this invention can be applied, in whole or in part, to many types of surgical procedures including those which rely on surgical retractors to create and maintain a surgical window into the patient's incised skin for access into the patient's abdomen or thorax, and those which rely on laparoscopic entry ports into the patient's skin to gain such access.
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