2011年2月14日星期一

From dental chair to delivery room: Laughing gas returning to help manage pain of labour, birth

From dental chair to delivery room: Laughing gas returning to help manage pain of labour, birth
CONCORD, N.H. – Labour pain is nothing to laugh at. Yet. The use of nitrous oxide, or laughing gas, during childbirth fell out of favour in the United States decades ago, and just two hospitals � one in San Francisco [...] http://bit.ly/f0jHUd

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