1,641
Participants
Start Date
August 31, 2012
Primary Completion Date
February 28, 2014
Study Completion Date
February 28, 2014
vaginal delivery
forceps extraction
vaginal delivery by forceps extraction
vacuum extraction
vaginal delivery by vacuum extraction
cesarean section
St Olavs Hospital Trondheim University Hospital, Trondheim
St. Olavs Hospital
OTHER
Norwegian University of Science and Technology
OTHER