Preterm Labor and Birth (ACOG) [PDF - 282KB] Preterm Labor and Birth (ACOG) [PDF - 282KB] Preterm Labor and Birth (ACOG) [PDF - 282KB] Ten percent Preterm Labor and Birth (ACOG) [PDF - 282KB] Preterm Labor and Birth (ACOG) [PDF - 282KB] Preterm Labor and Birth (ACOG) [PDF - 282KB]