The musician died of natural causes at a Nashville hospital on Wednesday, his son Gary said.

BBC: Banjo musician Earl Scruggs dies aged 88

HCA, the Nashville-based hospital giant, studied 17, 792 deliveries in 27 hospitals over three months in 2007.

WSJ: Push to Reduce Rates of Early Term Induced Deliveries

The trial was run at three hospitals: Vanderbilt University Medical Center in Nashville, the Children's Hospital of Philadelphia and the University of California, San Francisco.

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