Clinical experience with the Hewlett-Packard M-1350A fetal monitor: correlation of Doppler-detected fetal body movements with fetal heart rate parameters and perinatal outcome - Devoe,L.; Boehm,F.; Paul,R.; Frigoletto,F.; Penso,C.; Goldenberg,R.; Rayburn,W.; Smith,C. (Am J Obstet Gynecol, 1994)