From the American Academy of Family Physicians

Based on the most recent evidence, the American Academy of Family Physicians (AAFP) revised its VBAC guidelines (March 2005) and now encourages women to consider labor after a prior cesarean and maternity care providers to support women's choice. The AAFP found no scientific evidence that having a surgical team and anesthesia "immediately available" when women labor for a VBAC significantly improved outcomes.

The complete guidelines are available as a pdf file from the AAFP web site.

http://www.aafp.org/x1597.xml