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Obstet Gynecol

January 2015

University Hospitals Leuven, Leuven, Belgium Medical University Graz, Graz, Austria Inselspital, Bern, Switzerland Saint Peter's University Hospital, New Brunswick, New Jersey Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada University Medical Centre, Utrecht, The Netherlands Mount Sinai Hospital, Toronto, Ontario, Canada.