These are "very challenging times for the grocery industry" but Sainsbury's is doing well against its immediate competitors, according to the supermarket's outgoing chief executive.
Justin King told Good Morning Britain Sainsbury's was still "growing a lot stronger than our grocery competition" and the whole industry was dealing with low growth.
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Mr Kim has made two recent visits to China.
The study looked at the development of 422 children over the course of eight years.
The president said they will come into force if China refuses to change its practices.