In people not adapted to life at altitude, the sparse oxygen can impair fetal growth, causing issues that can last a lifetime ...

The Friedman curve, the gold standard for rates of cervical dilation and fetal descent during active labor, was developed almost 50 years ago. To define a modern curve for normal labor ...

In Leadville, a Colorado mining town at over 10,000 feet, scientists observed in the 1950s that babies of European descent had significantly ... even before fetal growth slows down.