China's Sex Ratio at Birth Declines 4 Years in a Row Xinhua News Agency, March 05, 2013 http://www.shanghaidaily.com/nsp/National/2013/03/05/Chinas%2Bsex%2Bratio%2Bat%2Bbirth%2Bdeclines%2B4%2Byears%2Bin%2Ba%2Brow/