Vaginal birth after cesarean [electronic resource] : new insights / prepared for Agency for Healthcare Research and Quality ; prepared by Oregon Health and Sciences University Evidence-based Practice Center ; investigator team, Jeanne-Marie Guise ... [et al.].
Rockville, MD : Agency for Healthcare Research and Quality, U.S. Dept. of Health and Human Services, 
"This information is based on research conducted by the Oregon Evidence-based Practice Center (EPC) under contract to the Agency for Healthcare Research and Quality (AHRQ), Rockville, MD (Contract No. 290-2007-10057-I)."