Raspberry leaf in pregnancy: its safety and efficacy in labor.2001-03-04RCTJournal of midwifery & women's health 46(2)M SimpsonM ParsonsJ GreenwoodK WadePubMed: 11370690DOI: 10.1016/s1526-9523(01)00095-22 Insights on Shortened Second Stage of LaborReduced Forceps Delivery RateHigh evidence