Children drink milk while waiting to receive medical checks for possible kidney stones at a hospital in Hefei, Anhui province in this September 15, 2008 file photo. To match Special Report ... more 
Children drink milk while waiting to receive medical checks for possible kidney stones at a hospital in Hefei, Anhui province in this September 15, 2008 file photo. To match Special Report CHINA-MILKPOWDER REUTERS/Stringer/Files (CHINA - Tags: HEALTH FOOD SOCIETY) CHINA OUT. NO COMMERCIAL OR EDITORIAL SALES IN CHINA less 
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Reuters | Photo By STRINGER SHANGHAI / REUTERS
Thu, Nov 7, 2013 7:12 PM EST