Suppose you are at a station and happen to see someone passing out after a heart attack. A crowd of worried onlookers gathers. Somebody shouts, "Call an ambulance!"
What should you do next?
Tokyo-based social venture Coaido is launching an iPhone app that helps bystanders assist as effectively as possible in the crucial few minutes after a cardiac arrest.
With your current subscription plan you can comment on stories. However, before writing your first comment, please create a display name in the Profile section of your subscriber account page.