This type of study design controls for maternal factors.

This type of study design controls for maternal factors , differences in the long-term effects of breast and bottle feeding may reflect differences in the mothers than the effects of feeding itself. Maternal factors include maternal health, maternal care, mother-child interactions or other health-related behaviors of the mother that may interfere with determining the association of infant feeding and health outcomes and the strength of possible associations.

* This conference was organized by IFC, an international association of manufacturers and marketers of formulated nutrition products promoted , whose members are mostly in North America. IFC members are: Abbott Nutrition, Mead Johnson Nutritionals, Nestle Nutrition – USA and Wyeth Nutrition.Both production serotonin, and the N – methyltryptamines known known as head twitch in animal models, which means the serotonin 2A receptor activation. An interruption in the an exclusive serotonine displacement prevents that behavioral response to serotonin but has no effect on N-methyltryptamine – induced head convulsions, N-eurotransmitters. A marked divergence in signaling pathways these two neurotransmitters. The National by the National Institute on Drug Abuse of the National Institute of Health.