卡罗尔·萨卡拉来自北美的信：一项非对照实验：在美国，择期分娩占主导地位。 - Suppr

Carol Sakala's letter from North America: an uncontrolled experiment: elective delivery predominates in the United States.

Birth. 2006 Dec;33(4):332-5.

Abstract

摘要

Birth. 2006 Dec;33(4):332-5.

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