{"trial":"Breart 1992 (France)","ev.trt":55,"n.trt":133,"ev.ctrl":62,"n.ctrl":131}
{"trial":"Breart 1992 (Belgium)","ev.trt":281,"n.trt":656,"ev.ctrl":319,"n.ctrl":664}
{"trial":"Gagnon 1997 (Canada)","ev.trt":139,"n.trt":209,"ev.ctrl":142,"n.ctrl":204}
{"trial":"Hodnett 1989 (Canada)","ev.trt":30,"n.trt":72,"ev.ctrl":43,"n.ctrl":73}
{"trial":"Kennell 1991 (USA)","ev.trt":24,"n.trt":212,"ev.ctrl":55,"n.ctrl":200}
{"trial":"Langer 1998 (Mexico)","ev.trt":205,"n.trt":361,"ev.ctrl":303,"n.ctrl":363}