title: Letter: Preoperative laparoscopy.
mesh_terms: D001794:Blood Pressure; D003949:Diagnostic Techniques, Surgical; D006801:Humans; D010535:Laparoscopy / Q000009:adverse effects; D008722:Methods; D010529:Peritoneal Cavity / Q000098:blood supply; D011028:Pneumoperitoneum, Artificial