1 23 Surgical Endoscopy And Other Interventional Techniques Official Journal of the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES) and European Association for Endoscopic Surgery (EAES) ISSN 0930-2794 Surg Endosc DOI 10.1007/s00464-013-2950-3 A prospective assessment of renal oxygenation in children undergoing laparoscopy using near-infrared spectroscopy Chris Westgarth-Taylor, Leonnie de Lijster, Guido van Bogerijen, Alastair J. W. Millar & Jonathan Karpelowsky