Additional file 1.

Web Table 1. Component studies in Johanson and Menon 1999 meta-analysis: Impact of vacuum vs. forceps delivery on perinatal mortality. Component studies in Johanson and Menon 1999 meta-analysis showing impact on stillbirths/perinatal mortality.

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Darmstadt et al. BMC Pregnancy and Childbirth 2009 9(Suppl 1):S6   doi:10.1186/1471-2393-9-S1-S6