The study appeared in JAMA, the Journal of the American Medical Association.
And that's the VOA Special English Health Report, with reporting by Melinda Smith and sound provided by JAMA. You can find our programs online at voaspecialenglish.com. I’m Steve Ember.
最新
2013-11-25
2013-11-25
2013-11-25
2013-11-25
2013-11-25
2013-11-25