Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In humans preterm birth refers to the birth of a baby of less than 37 weeks gestational age. The cause for preterm birth is mostly elusive and unknown but many factors appear to be linked to it. As such, the reduction of preterm birth remains a challenging proposition. Premature birth, commonly used as a synonym for preterm birth, refers to the birth of a baby before the developing organs are mature enough to allow normal postnatal survival. Babies who were born prematurely are at greater risk for short and long term complications, including disabilities and impediments in growth and mental development. Preterm birth is among the top causes of infant mortality globally...Learn more about premature or preterm birth, prenatal developments and other related matters with the help of this book.