title: Letter: Dangers of nitrous oxide pneumoperitoneum.
mesh_terms: D002245:Carbon Dioxide / Q000009:adverse effects; D006801:Humans; D010535:Laparoscopy / Q000009:adverse effects; D009609:Nitrous Oxide / Q000009:adverse effects*; D011028:Pneumoperitoneum, Artificial / Q000009:adverse effects*
chemical_list: D002245:Carbon Dioxide; D009609:Nitrous Oxide