1. Complementary and alternative approaches to pain relief during labor;Tournaire;Evid Based Complement Alternat Med,2007
2. Continuous support for women during childbirth;Hodnett;Cochrane Database Syst Rev,2007
3. Immersion in water in labour and birth;Cluett;Cochrane Database Syst Rev,2009
4. Complementary and alternative therapies for pain management in labour;Smith;Cochrane Database Syst Rev,2006
5. Complementary and alternative medicine in pregnancy: a survey of North Carolina certified nurse-midwives;Allaire;Obstet Gynecol,2000