It may refer to the manufacturer. Search MBI and doll and you will see a search result for a company called MBI, Inc. They have been around since 1969.
Smoking during pregnancy reduces the growth and health of babies and increases the risks of a number of complications and illnesses for both the mother and baby. Babies born to women who smoke during pregnancy have a greater chance of premature birth, low birth weight, stillbirth and infant mortality.
By Mayo Clinic Staff. While not all premature babies experience complications, being born too early can cause short-term and long-term health problems for preemies. Generally, the earlier a baby is born, the higher the risk of complications. Birth weight plays an important role, too.