Hello,
Here are the recommendations from ACOG.
http://www.acog.org/from_home/publications/press_releases/nr05-04-04-1.cfm
If you have questions about it let me know.
~Macy
Nurse (RN)
RN of 17years.Experienced in ER, Critical Care, Surgery, Nutrition, Peds,OB/Gyn.