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McDonald's Japan executives Takehiko Aoki (R) and Hidehito Hishinuma bow their heads at a press conference in Tokyo on January 7, 2015. A human tooth was served with french fries at a McDonald's in Japan last year, reports said on January 7, the latest in a series of recent woes involving contaminated nuggets and a chip shortage. AFP PHOTO / Yoshikazu TSUNO (Photo credit should read YOSHIKAZU TSUNO/AFP/Getty Images)