Clamping the cord in the seconds after birth cuts off the blood flow from mom to baby. While not necessarily harmful, the common practice in delivery rooms potentially robs newborns of those last precious minutes of cord blood, the researchers said, and cord blood contains stem cells that have regenerative properties and can grow into different types of cells.
Research suggests there may be some benefits to getting that extra blood from mom right after birth, said senior study author Dr. Paul Sanberg, director of the University of South Florida's Center of Excellence for Aging and Brain Repair.
Waiting to Clamp the Umbilical Cord May Be Better for Babies- http://www.ivillage.com/waiting-clamp-umbilical-cord-may-be-better-babies/4-a-189616 
Anyone planning to wait a bit before having baby's umbilical cord clamped? Have you done this with previous deliveries?