1 23 Obesity Surgery The Journal of Metabolic Surgery and Allied Care ISSN 0960-8923 OBES SURG DOI 10.1007/s11695-015-1819-z Improvement of Kidney Function Following Bariatric Surgery: Hope or Illusion? G. Favre, A. S. Schneck, R. Anty, V. L. M. Esnault & A. Iannelli