The entrance of the Cedars Sinai Medical Center is pictured in Los Angeles, California, in this January 4, 2008 file photo. French singer Johnny Hallyday, who was admitted to Cedars Sinai Medical Center on Monday is responding well to treatment, a statement on his website said on on December 9, 2009. REUTERS/Hector Mata/Files (UNITED STATES ENTERTAINMENT SOCIETY) Wed Dec 9, 5:10 PM