This specialized chiropractic technique was developed by Larry Webster, D.C., founder of the International Chiropractic Pediatric Association.  By correcting subluxations in the sacrum and pelvis of pregnant women and balancing the muscles and ligaments, this technique decreases stress on the uterus, allowing the baby within greater ability to move into proper birthing position.  (see http://icpa4kids.com/about/webster_technique.htm)