By Marilynn Larkin NEW YORK (Reuters Health) - There may be a dose-response relationship between the amount of mesh used to correct pelvic organ prolapse and stress urinary incontinence and subsequent complications and repeated interventions, researchers suggest. Dr. Art Sedrakyan of Weill Cornell Medical College in New York City told Reuters Health by email, "Currently, mesh used for pelvic organ prolapse is a class III (highest risk) device, upgraded from a class II (intermediate risk) device.