In this issue of Clinics in Perinatology, guest editors Drs. David K. Stevenson and Gary M. Shaw, along with research scientist Ron J. Wong, bring their considerable expertise to the topic of Preterm Birth. Preterm birth is the leading cause of death among children, with one million children dying due to preterm birth before the age of five years. This issue is a key resource for perinatologists who seek to predict and improve outcomes...