Preterm Labor

Labor that begins before the 37th week of pregnancy. If a woman's labor cannot be stopped, a preterm birth is likely. Preterm birth is a common cause of birth defects and infant death.
Found on http://www.pregnology.com/AZ/P/9

Preterm labor

Labor
Found on http://www.whattoexpect.com/pregnancy/glossary/p.aspx
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