Kfoury T, Mazoit JX, Schumacher M, Benhamou D, Beloeil H. A comparison of different dosages of a continuous preperitoneal infusion and systemic administration of ropivacaine after laparotomy in rats. Anesth Analg. 2011 Sep;113(3):617–25. doi: 10.1213/ane.0b013e31821f108a. PMID: 21596868.