So the answer is "no"...
... because there's no actual evidence that it can - read the article carefully:
"Of 75 people who died after being shot with a taser or stun gun, the taser was considered a potentially contributory cause of death in 27 per cent of cases."
Did you spot the word "potentially"? Not a shred of actual evidence that the discharge did indeed cause death - just 20 cases where it might have. And that's in the United States - no mention of how many cases were studied to produce this figure ("n" for all you statistics freaks), which could easily have been 10,000 or more.
In the UK, it's an alternative to being shot - i.e. by a real bullet (death by "lead allergy", perhaps?) - so don't lose any sleep. You can always comply, unless you're completely out of your brains on drink and/or drugs, in which case you're a public danger already.
And the article isn't even accurate: "In a taser, an electrode is shot out as a dart ...". No, it's not - there are two electrodes, not one. Hardly a scientific article.