KEY POINTS:
When football star David Beckham visited young leukaemia patients at a Shanghai hospital, the ensuing chaos forced police to seal the institution's doors to control a frantic surging crowd.
Hundreds of fans, media, staff and curious bystanders prompted police to shut off access to a wing of Xinhua Hospital, barring anyone from entering or leaving for several hours.
Beckham is in the financial hub for an exhibition match with his US club, LA Galaxy, against a Shanghai-Hong Kong team.
