2[1]Nolan M.Supporting women in labour: the Doula's role. Mod Midwife,199 5 Mar,5(3):12
3[2]Zhang J,Bernasko JW,Leybovich E.Continuous labor support from labor attendant for primiparous women:a meta-analysis.Obstet Gynecol,1996 Oct,88(4 Pt 2):739
4[3]Ladfors L,Eriksson M,Mattsson LA.A population based study of Swedish women's opinions about antenatal, delivery and postpartum care.Acta Obstet Gynecol Scand ,2001 Feb,80(2):130
5[4]Gulbransen G,Hilton J,McKay L.Home birth in New Zealand 1973-1993: incidence and mortality.N Z Med J,1997 Mar,28:110(1040)